Crocs Uncover

Bizarre Species

viernes, 6 de junio de 2008

"Lost" Pyramid Found Buried in Egypt



Andrew Bossone in Cairo
for NGN

The pyramid of an ancient Egyptian pharaoh has been rediscovered after being buried for generations, archaeologists announced today.

The pyramid is thought to house the tomb of King Menkauhor, who is believed to have ruled in Egypt's 5th dynasty for eight years in the mid-2400s B.C.
Long since reduced to its foundations, the structure was previously known as Number 29 or the "Headless Pyramid." It was mentioned in the mid-19th century by German archaeologist Karl Richard Lepsius.

Then it disappeared in the sands of Saqqara, a sprawling royal burial complex near current-day Cairo.

It took Egyptian archaeologists about a year and a half just to remove all the sand above the pyramid.

"After Lepsius the location of the pyramid was lost and the substructure of [the] pyramid never known," said Zahi Hawass, secretary general of Egypt's Supreme Council of Antiquities.

"It was forgotten by people until we began to search this area and a hill of sand, maybe 25 feet [7.6 meters] high."

Hawass is a National Geographic explorer-in-residence. (The National Geographic Society owns National Geographic News.)

Old Kingdom Clues

Nothing on the pyramid specifically names its owner, and the majority of the structure has been destroyed, so Egyptian archaeologists had to put several clues together to identify it.

Past archaeologists have disputed the date of the pyramid, usually putting it in either the Old Kingdom, between 2575 and 2150 B.C., or the Middle Kingdom, between 1975 and 1640 B.C.

But the recent research determined that the pyramid lacked the winding mazes typical of a Middle Kingdom temple.

Instead, the lack of artwork and inscriptions, as well as the structure's red granite blocks, were typical of Old Kingdom pyramids, according to Hawass.

The burial chamber also contained the lid of a sarcophagus made of gray schist, a type of rock often used in the Old Kingdom.

What's more, the newfound pyramid resembles the pyramid next to it, which belongs to the first pharaoh of the 6th dynasty, Teti, who ruled from 2345 to 2181 B.C. That suggested the lost pyramid could also come from the 5th dynasty.

The neighboring pyramid also pointed to the owner of the pyramid as Menkauhor, since he was without a discovered burial tomb.

"There were missing pyramids of the kings, and this is one of them," Hawass said.


Sacred Road


Archaeologists also announced the discovery of new parts of a sacred road, dating to the Ptolemaic period, some 2,000 years after the Old Kingdom.

The discovery shows the sustained importance of Saqqara, which was located in the ancient capital of Memphis, the researchers added.

"During the whole history of Egypt, Memphis and Saqqara had remained very, very important," El Aguizy said.

"I am discovering tombs of people of the 26th dynasty [in Saqqara] that were reusing tombs of the 19th dynasty. It is a sacred place, and so many important people wanted to be buried there."

Another reason people wanted to be buried in Saqqara was the sacred road, which was used for the procession of mummified bulls of the god of the dead, Osiris.

"[Osiris] was enthroned like a king and when he died they made funerals like those of a king," El Aguizy said.

The bulls also had a historical significance: Their deaths were used to determine when a pharaoh reigned.

"It's a way of dating the pharaohs," El Aguizy said. "Sometimes we know how many bulls died during the reign of a king, or vice versa."

(See a photo of an underground tunnel for sacred bulls.)

More Discoveries Expected

The sacred path, first discovered by French archaeologist Auguste Mariette in 1850, is nicknamed the Way of the Sphinxes because of its long row of statues often found at the gates of Egyptian temples.

"The modern name of ancient Memphis is Mit Rahina … which means the way of the Sphinx," El Aguizy said.

"So [this path is] presumably the Way, with sphinxes [formerly] on the two sides."

Archaeologists hope the path will lead to more discoveries in the area. Plans are underway to relocate modern-day workers who live in a village beside the Menkauhor site to allow an expanded search for more temples.

"When I say we've discovered 30 percent of the Egyptian monuments, I take Saqarra as the first example," Hawass said.

"Saqqara is a virgin site," he added. "It's very important for us to do this excavation to understand more about the pyramids of the Old Kingdom."

Stingray



Stingrays are commonly found in the shallow coastal waters of temperate seas. They spend the majority of their time inactive, partially buried in sand, often moving only with the sway of the tide. The stingray's coloration commonly reflects the seafloor's shading, camouflaging it from predatory sharks and larger rays. Their flattened bodies are composed of pectoral fins joined to their head and trunk with an infamous tail trailing behind.

While the stingray's eyes peer out from its dorsal side, its mouth, nostrils, and gill slits are situated on its underbelly. Its eyes are therefore not thought by scientists to play a considerable role in hunting. Like its shark relatives, the stingray is outfitted with electrical sensors called ampullae of Lorenzini. Located around the stingray's mouth, these organs sense the natural electrical charges of potential prey. Many rays have jaw teeth to enable them to crush mollusks such as clams, oysters, and mussels.

When they are inclined to move, most stingrays swim by undulating their bodies like a wave; others flap their sides like wings. The tail may also be used to maneuver in the water, but its primary purpose is protection.

The stingray's spine, or barb, can be ominously fashioned with serrated edges and a sharp point. The underside may produce venom, which can be fatal to humans, and which can remain deadly even after the stingray's death. In Greek mythology, Odysseus, the great king of Ithaca, was killed when his son, Telegonus, struck him using a spear tipped with the spine of a stingray.

jueves, 5 de junio de 2008

Cleopatra Bust Among Treasures Found in Egypt Temple



Mati Milstein
for NGN

An alabaster bust of Cleopatra and a mask that might have belonged to her lover Marc Antony are part of a slew of treasures found north of Alexandria, Egypt's Supreme Council of Antiquities announced on Monday.

The artifacts were discovered inside the Taposiris Magna, a large temple in what is now Abusir that was built during the reign of Ptolemy II, which lasted from 282 to 246 B.C. Zahi Hawass, secretary general of the antiquities council, had been at the site leading a team searching for the lost tombs of Antony and Cleopatra.

According to legend, the famous couple committed suicide when Antony was defeated in 31 B.C. during a short series of land and sea battles that cemented Octavian's rule over Rome.

Hawass, who is also a National Geographic Explorer-in-Residence, said that in addition to the bust and mask, the team found 22 coins stamped with Cleopatra's face and a bronze statue of the Greek goddess Aphrodite.

While searching the site's network of underground shafts and tunnels, Hawass also stumbled across skeletons that he said were likely the remains of early Christians hiding from Roman authorities.

Though adamant that the most recent discoveries mean they are no closer to finding the tombs, the researchers think Taposiris is "a perfect place for us to look for Cleopatra and Marc Antony," Hawass said.

"It's just a theory—we are not 100 percent—that this was a typical place to hide the tombs away from Octavian."

Bigger Than Tut?

Cleopatra was the last ruler during Egypt's Greco-Roman Period, in which a Greek royal family governed from 323 to 30 B.C. She was arguably one of the most powerful and influential women in the ancient world.

In 48 B.C. she seduced Roman emperor Julius Caesar and bore him a son.

Years later she had three children with Marc Antony, then a key Roman political and military leader.

Their ill-fated love affair has been the subject of countless artworks, including paintings, movies, an opera, and a Shakespeare play.

One theory is that Taposiris Magna may have been chosen as the couple's burial site because of its temples to the Egyptian god Osiris and his wife, Isis.

"We hope Cleopatra's tomb is located in this site," Hawass said. "This could be an important discovery—bigger than that of King Tutankhamun's tomb."

John Baines is an Egyptologist at Oxford University's Oriental Institute who was not involved in the excavation.

"Aphrodite is not associated with indigenous Egyptian temples, so her presence may suggest a non-Egyptian, perhaps Ptolemaic connection," Baines said.

And masks similar to the one Hawass thinks might have belonged to Marc Antony were "normally part of a burial and are relatively common objects from Greco-Roman Egypt," he added.

Mary Beard, professor of classics at Cambridge University, said she is very doubtful that the site will contain the tomb of Cleopatra.

"I would have thought it very unlikely that Marc Antony was buried with her. Of course, if the title 'Tomb of Cleopatra' was pinned on [this site], it would be a huge tourist attraction," she said.

"I am not, needless to say, impugning the archaeological credentials of Mr. Hawass, but it's hard not to think that such factors play some part in the enthusiasm surrounding this discovery."

Hawass has been digging at Taposiris Magna for the past two years and has explored about 95 percent of the site.

Excavations are now on hold and will resume in November, when the team plans to use radar to further map buried features.

Missing Cape Cod lighthouse located in Calif.



WELLFLEET, Mass. - Local historians for decades thought the 30-foot tall lighthouse that once overlooked Wellfleet Harbor had been taken down and destroyed in 1925. Turns out, it had just been moved to the California coast.The fate of the cast-iron tower was uncovered last year by lighthouse researchers and reported by Colleen MacNeney in this month's edition of Lighthouse Digest.

MacNeney told the Cape Cod Times in Wednesday's edition it was her most exciting discovery.

Wellfleet historian Helen Purcell says the discovery of the lighthouse at Point Montara, 25 miles south of San Francisco, was a genuine shock.

MacNeney says she discovered correspondence that proved the lighthouse, first erected in 1881, had been moved by the Coast Guard from Wellfleet to Yerba Buena, Calif., and eventually to Point Montara.

There is no known documentation explaining how it was moved across the country, MacNeney said.

But Jim Walker, chairman of the Cape Cod Chapter of the American Lighthouse Foundation, speculates that because it is metal, it could have been disassembled bolt by bolt, with the pieces then transported by rail.

The lighthouse is still used as a navigational aid and a hostel.

miércoles, 4 de junio de 2008

Titanic Was Found During Secret Cold War Navy Mission








John Roach
NGN
June 2, 2008

The 1985 discovery of the Titanic stemmed from a secret United States Navy investigation of two wrecked nuclear submarines, according to the oceanographer who found the infamous ocean liner.

Pieces of this Cold War tale have been known since the mid-1990s, but more complete details are now coming to light, said Titanic's discoverer, Robert Ballard

"The Navy is finally discussing it," said Ballard, an oceanographer at the University of Rhode Island in Narragansett and the Mystic Aquarium and Institute for Exploration in Connecticut.

Ballard met with the Navy in 1982 to request funding to develop the robotic submersible technology he needed to find the Titanic. Ballard is also a National Geographic Society explorer-in-residence.

Surprise Find

Ronald Thunman, then the deputy chief of naval operations for submarine warfare, told Ballard the military was interested in the technology—but for the purpose of investigating the wreckage of the U.S.S. Thresher and U.S.S. Scorpion.

Since Ballard's technology would be able to reach the sunken subs and take pictures, the oceanographer agreed to help out.

He then asked the Navy if he could search for the Titanic, which was located between the two wrecks.

"I was a little short with him," said Thunman, who retired as a vice admiral and now lives in Springfield, Illinois. He emphasized that the mission was to study the sunken warships.

Once Ballard had completed his mission—if time was left—Thunman said, Ballard could do what he wanted, but never gave him explicit permission to search for the Titanic."But the Navy never expected me to find the Titanic, and so when that happened, they got really nervous because of the publicity," Ballard said.
"But people were so focused on the legend of the Titanic they never connected the dots."

http://ngm.nationalgeographic.com/ngm/0405/feature7/index.html
http://channel.nationalgeographic.com/series/finding-history/3570/Overview

Titanic: The Final Secret, a documentary on the discoveries, airs Monday, June 2, at 9 pm ET/PT on the National Geographic Channel.

Sunken Subs

The Thresher and Scorpion had sunk in the North Atlantic Ocean at depths of between 10,000 and 15,000 feet (3,000 and 4,600 meters).

The military wanted to know the fate of the nuclear reactors that powered the ships, Ballard said.

This knowledge was to help determine the environmental safety of disposing of additional nuclear materials in the oceans.

The Navy also wanted to find out if there was any evidence to support the theory that the Scorpion had been shot down by the Soviets.

Ballard's data showed that the nuclear reactors were safe on the ocean bottom and were having no impact on the environment, according to Thunman.

The data also confirmed that Thresher likely had sunk after a piping failure led to a nuclear power collapse, he added. Details surrounding the Scorpion are less certain.

A catastrophic mishap of some sort led to a flooding of the forward end of the submarine, Thunman said. The rear end remained sealed and imploded once the sub sank beneath a certain depth.

"We saw no indication of some sort of external weapon that caused the ship to go down," Thunman said—dismissing the theory that the Russians torpedoed the submarine in retaliation for spying.

Debris Trails

While searching for the sunken submarines, Ballard learned an invaluable lesson on the effects of ocean currents on sinking debris: The heaviest stuff sinks quickly.

The result is a debris trail laid out according to the physics of the currents.

With just 12 days left over in his mission, Ballard began searching for the Titanic, using this information to track down the ocean liner. He speculated that the ship had broken in half and left a debris trail as it sank.

"That's what saved our butts," Ballard said. "It turned out to be true."

The explorer has since used a similar technique to find other sunken ships and treasures, including his recent expeditions to the Black Sea.

Are these expeditions also part of top-secret missions? After all, the Black Sea is in the volatile Middle East.

"The Cold War is over," Ballard said. "I'm no longer in the Navy."

martes, 3 de junio de 2008

Bizarre but true facts about the Earth



Source: Thatsweird.net


In 1783 an Icelandic eruption threw up enough dust to temporarily block out the sun over Europe.

About 20 to 30 volcanoes erupt each year, mostly under the sea.

A huge underground river runs underneath the Nile, with six times more water than the river above.

Lake Bosumtwi in Ghana formed in a hollow made by a meteorite.

Beaver Lake, in Yellowstone Park, USA, was artificially created by beaver damming.

Off the coast of Florida there is an underwater hotel. Guests have to dive to the entrance.

Venice in Italy is built on 118 sea islets joined by 400 bridges. It is gradually sinking into the water.

The Ancient Egyptians worshipped a sky goddess called Nut.

The world's windiest place is Commonwealth Bay, Antartica.

In 1934, a gust of wind reached 371 km/h on Mount Washington in New Hampshire, USA.

American Roy Sullivan has been struck by lighting a record seven times.

The desert baobab tree can store up to 1000 litres of water in its trunk.

The oldest living tree is a California bristlecone pine name 'Methuselah'. It is about 4600 years old. The largest tree in the world is a giant sequoia growing in California. It is 84 meters tall and measures 29 meters round the trunk. The fastest growing tree is the eucalyptus. It can grow 10 meters a year.

The Antartic notothenia fish has a protein in its blood that acts like antifreeze and stops the fish freezing in icy sea.

The USA uses 29% of the world's petrol and 33% of the world's electricity.

The industrial complex of Cubatao in Brazil is known as the Valley of Death because its pollution has destroyed the trees and rivers nearby.

Tibet is the highest country in the world. Its average height above sea level is 4500 meters.

Some of the oldest mountains in the world are the Highlands in Scotland. They are estimated to be about 400 million years old.

Fresh water from the River Amazon can be found up to 180 km out to sea.

The White Sea, in Russia, has the lowest temperature, only -2 degrees centigrade. The Persian Gulf is the warmest sea. In the summer its temperature reaches 35.6 degrees centigrade.

There is no land at all at the North Pole, only ice on top of sea. The Arctic Ocean has about 12 million sq km of floating ice and has the coldest winter temperature of -34 degrees centigrade.

The Antarctic ice sheet is 3-4 km thick, covers 13 million sq km and has temperatures as low as -70 degrees centigrade.

Over 4 million cars in Brazil are now running on gasohol instead of petrol. Gasohol is a fuel made from sugar cane.

Ancient Roman Life Preserved at Pompeii

Cast of victim of the Vesuvius eruption in Pompeii, Italy
Photograph by Time & Life Pictures/Getty Images




By James Owens

On a fateful summer morning in A.D. 79 Mount Vesuvius buried the vibrant Roman city of Pompeii—and many of its citizens—beneath tons of volcanic ash and debris.

"Darkness fell, not the dark of a moonless or cloudy night, but as if the lamp had been put out in a dark room," wrote Pliny the Younger, who witnessed the cataclysm from across the Bay of Naples.

The darkness Pliny described drew the final curtain on an era in Pompeii. But the disaster also preserved a slice of Roman life. The buildings, art, artifacts, and bodies forever frozen offer a unique window on the ancient world.

Since its rediscovery in the mid-18th century the site has hosted a tireless succession of treasure hunters and archaeologists.

"Pompeii as an archaeological site is the longest continually excavated site in the world," says Steven Ellis, a classics professor at the University of Cincinnati and the co-director of the Pompeii Archaeological Research Project: Porta Stabia.

"Because of this, what we find in Pompeii is that every step in the development in the science of archaeology was tested out in Pompeii—with mixed results," he says.

For early archaeologists the disaster of the city's final days was the primary draw, unearthing buildings and streets as they stood at the time of the eruption.

"Today we are interested in the development of the city," Ellis explains. "What was there first and how did it get to the point it was when it was destroyed?"

The People's Pompeii

Ellis's team is particularly interested in a corner of the city near the Porta Stabia gate that is a bit off the beaten archaeological path.

"It's kind of a lost neighborhood of the city. When they first cleared it of debris in the 1870s they left this block for ruin (because it had no large villas) and it was covered over with a terrible jungle of vegetation," he says.

Much research has centered on public buildings and breathtaking villas that portray the artistic and opulent lifestyle enjoyed by the city's wealthy elite.

"We're trying to see how the other 98 percent of people lived in Pompeii," Ellis says. "It's a humble town block with houses, shops, and all the bits and pieces that make up the life of an ancient city."

But while his quest is knowledge of the living Pompeii, Stanford University's Gary Devore, the project's co-director, notes that the eruption still resonates because of the intimate connection it created between past and present.

"We're digging in an area where a lot of Pompeians died during the eruption," he says. "I remind myself all the time that I can investigate in such detail this ancient Roman culture as a direct result of a great human disaster.

"At the end of a day of intense mental processing and physical labor, when the tools are being packed up and put away for the night, I often take a moment to remind myself of that connection with the individuals whose homes and workshops we're digging up," he says.

Preserving Pompeii's Past for the Future

Even after hundreds of years of work, about a third of the city still lies buried. Yet there is no rush to unearth these hidden Pompeii neighborhoods.

Today's great challenge is preservation of what has been uncovered.

Volcanic ash long protected Pompeii, but much of it has now been exposed to the elements for many years. The combined wear of weather, pollution, and tourists has created a real danger of losing much of what was luckily found preserved.

Yet Devore is hopeful for Pompeii's future.

"The current administration of Pompeii [under Pietro Giovanni Guzzo] has been incredibly diligent in focusing on preservation," he says.

Over his 13 seasons at Pompeii, Devore has witnessed great improvements in conservation and preservation of the priceless site.

"As an archaeologist, I'm part of that process in the way that I document what gets dug out of the ground," he adds. "Since archaeology is destruction, we destroy bits of Pompeii as we go along. So it's incredibly important that we record in great detail, with the ability to recreate what we've taken away afterward. That's how we're part of the conservation of Pompeii."

lunes, 2 de junio de 2008

Machu-Pichu



The legendary Inca settlement of Machu Picchu has become one of the world's iconic areas. Its haunting aura is enhanced by the mystery surrounding its use and abandonment.





viernes, 30 de mayo de 2008

Rare uncontacted tribe photographed in Amazon






RIO DE JANEIRO (Reuters) - Amazon Indians from one of the world's last uncontacted tribes have been photographed from the air, with striking images released on Thursday showing them painted bright red and brandishing bows and arrows.
The photographs of the tribe near the border between Brazil and Peru are rare evidence that such groups exist. A Brazilian official involved in the expedition said many of them are in increasing danger from illegal logging.

"What is happening in this region is a monumental crime against the natural world, the tribes, the fauna and is further testimony to the complete irrationality with which we, the 'civilized' ones, treat the world," Jose Carlos Meirelles was quoted as saying in a statement by the Survival International group.

One of the pictures, which can be seen on Survival International's Web site (http://www.survival-international.org), shows two Indian men covered in bright red pigment poised to fire arrows at the aircraft while another Indian looks on.

Another photo shows about 15 Indians near thatched huts, some of them also preparing to fire arrows at the aircraft.

"The world needs to wake up to this, and ensure that their territory is protected in accordance with international law. Otherwise, they will soon be made extinct," said Stephen Corry, the director of Survival International, which supports tribal people around the world.

Of more than 100 uncontacted tribes worldwide, more than half live in either Brazil or Peru, Survival International says. It says all are in grave danger of being forced off their land, killed and ravaged by new diseases.

jueves, 29 de mayo de 2008

"Amazing" Dino Fossil Found With Skin, Tissue in China


Nicholas Wadhams
for NG News

The fossil of a dinosaur with a flesh wound has been discovered in northeastern China, offering the most complete view to date of dinosaur skin, a scientist says.

The fossil is of a 130-million-year-old Psittacosaurus, or parrot lizard, a beaked reptile about the size of a pig that could walk on either two or four legs.
The animal died after suffering a wound from a predator—or was perhaps bitten by a scavenger after it died—exposing the inner skin structure, which was preserved for millions of years.

A recent study of the fossil identified what appeared to be tooth marks in the wound.

The research also suggests that some dinosaurs had thick, scaly skin like that of modern-day reptiles, refuting the theory that dinos had primitive feathers.

The findings were reported by Theagarten Lingham-Soliar of South Africa's University of KwaZulu-Natal in the current issue of the Proceedings of the Royal Society B.

Soft Tissue Preserved

Lingham-Soliar has identified what he says is fossilized surface skin as well as a cross-section of the thick layer below the surface, called the dermis, around the animal's lower left side.

"To have soft tissue preserved is amazing in the fossil record, because clearly the soft tissue is about the first thing that will decay and disintegrate," Lingham-Soliar said.

"Until now we had seen only surface preservations, but this is the first time we see a deep cross-section of the skin cut away at right angles to the surface."

(Read related story: "'Dinosaur Mummy' Found; Has Intact Skin, Tissue" [December 3, 2007].)

The fossil was found in a formation in northeast China's Liaoning Province dating to between 125 million and 135 million years ago. The area has yielded so many fossil discoveries in recent years that scientists have been unable to keep pace with them all. (Learn more about China's extraordinary fossil site.)

The excellent preservation of the newfound Psittacosaurus may have been a consequence of rapid burial and speedy mineralization of the soft tissue before it began to decompose, Lingham-Soliar said.Thick Skin

The animal's skin was at least 0.8 inch (2 centimeters) thick, with some 40 layers of a fibrous protein called collagen, making it ideal for defense against predators, Lingham-Soliar said.

But the thick skin was still able to stretch and flex to accommodate swelling in the belly from a heavy diet of plants and fibers, he added.

"[Lingham-Soliar] has been able to show more detail of the complex organization of the dermis—this implies that Psittacosaurus at least had a tough yet presumably flexible skin," said Paul Maderson, a retired evolutionary biologist at the City University of New York.

Alan Feduccia, an evolutionary biologist the University of North Carolina, agreed.

"It's very important in the sense that it's our first glimpse into the microstructure of dinosaur skin, and what he's shown is that it has multiple layers of collagen fibers," said Feduccia, who specializes in bird evolution.

"That's not unexpected, by the way, since that's more or less the pattern with reptilians' skin, especially thick-skinned reptiles."

Birds and Dinosaurs?

The finding could also cast further doubt on a theory that had gained many proponents in recent years—the possibility that dinosaurs had primitive feathers, suggesting that some are the ancestors of today's birds.

Lingham-Soliar argues that the parrot lizard was adorned with bristles of collagen fibers, not early feathers.

"What is unexpected is the 40-plus layers of collagen, which even in thinner-skinned meat-eating dinosaurs would comprise many layers of fibers with the potential of being misidentified as proto-feathers," Lingham-Soliar said.

But not all paleontologists agree with his conclusion.

Hans-Dieter Sues is associate director for research and collections at the Smithsonian National Museum of Natural History in Washington, D.C.

He said there is a "preponderance of evidence to support that birds came from dinosaurs" known as theropods.

"[Lingham-Soliar] has tried for some time to argue that the featherlike structures on the theropod dinosaurs from the same formation as [where] the Psittacosaurus [was found] are collagen fibers, too," Sues said.

"However, many of the Chinese theropods have complex structures that clearly cannot be explained away in that fashion."

Oldest Live-Birth Fossil Found; Fish Had Umblical Cord




Remains of the world's oldest known mother have been unearthed in the Australian outback, scientists say.The remarkably well-preserved fossil—about 375 to 380 million years old—shows an embryo connected to its mother fish by an umbilical cord.


It is the earliest evidence of a vertebrate giving birth to live young, shifting back the date some 200 million years, said John Long, head of sciences at Museum Victoria in Melbourne, Australia, and lead author of a new study describing the find.

http://science.nationalgeographic.com/science/prehistoric-world/prehistoric-time-line.html?nav=A-Z

The fossil is also the earliest record of vertebrate sex, since live birth occurs when an ovum, or egg, has been fertilized internally by male sex cells.

"Having such advanced reproduction for a fish that primitive is amazing," Long said.

Evidence of live birth—as opposed to egg laying—is extremely rare and has only been found in a few fossils of dolphin-like reptiles called ichthyosaurs and marine lizards known as mosasaurs, Long said.

The new fossil captures a long-extinct placoderm, a primitive, shark-like armored fish.

(Related: "Shark Ate Amphibian Ate Fish: First 'Food-Chain Fossil'" [November 8, 2007].)

Dinosaurs of the Sea

Often called the "dinosaurs of the sea," placoderms were the ruling class of marine creatures for 70 million years—in the middle of the Paleozoic period—until their extinction about 360 million years ago.

Paleontologists believe they are the most primitive jawed vertebrates, even predating sharks.

The newfound mother fish measures 10 inches (25 centimeters) long, but other placoderms can grow to 20 feet (6 meters)—"some gargantuan in size," Long said.

Much of the fish's soft tissue has been preserved in a three-dimensional state, making the fossil "basically an exact replica of the living animal," said study co-author Kate Trinajstic, a paleontologist at the University of Western Australia.

"The material was so well preserved that we were able to pick up subtle details," Trinajstic said.

Such details helped the scientists determine that the prehistoric mother and baby are a new species of ptyctodont, a type of placoderm that has plates around the head and neck rather than the extensive body armor of its relatives.

They named the species Materpiscis attenboroughi—a combination of "mother fish" and a nod to world-renowned naturalist Sir David Attenborough.

Attenborough's 1979 TV series Life on Earth first brought to light the scientific value the Gogo area in the Kimberley region of Western Australia.

The area is the site of an ancient barrier reef that once teemed with marine life.

Fossils in the Gogo are so immaculately preserved because the reef became devoid of oxygen, which quickly killed the fish and the scavengers that would otherwise devour them.

Rapid burial and a stable tectonic continent made for near-perfect fossil preservation conditions.

A description of the fossil is published in this week's issue of the journal Nature.

Evolutionary Innovation

Michael Lee, an evolutionary biologist at the South Australian Museum, was not involved in the new research.

"Live-bearing and maternal nourishment of embryos is a very important evolutionary innovation, which we ourselves exhibit," Lee said.

"The evidence that the included individual is an embryo [rather than ingested prey] is very strong—it's the same species, the right size to be an embryo, in the correct location within the body, and has what appear to be umbilical structures."

Live birth "might be preserved more commonly than we thought. Now that we know what to look for, it might be noticed more often," he added.

In fact, a reevaluation of a fossil found in 1986 reveals that it is a second placoderm fossil with three embryos nestled inside the mother. Study author Long had found the second specimen, a Gogonasus fossil, on an expedition to Gogo funded by a National Geographic Society grant. (National Geographic News is part of the National Geographic Society).

At the time, Long thought the features were scales.

(Related: "Ancient Fish Fossil May Rewrite Story of Animal Evolution" [October 18, 2006].)

"There are still lots of things to discover," Long said. "Gogo is giving us a picture not just of reproduction, but of the whole lifestyle of these creatures."

San Marino-oldest city



Scenic San Marino City is situated on Mount Titano. The capital enjoys outstanding views of Italy, which surrounds the tiny 24-square-mile republic of San Marino.

San Marino Information and History

Originally a medieval city-state, the world's oldest republic perches atop a mountain in north-central Italy. San Marino takes pride in its finely minted coins, ceremonial guard, and postage stamps. Well-preserved castles and sweeping vistas of the Adriatic coast enchant 3.5 million visitors a year.
ECONOMY

Industry: tourism, banking, textiles, electronics.
Agriculture: wheat, grapes, corn, olives; cattle.
Exports: building stone, lime, wood, chestnuts, wheat, wine, baked goods, hides, ceramics.

miércoles, 28 de mayo de 2008

Hunter-Gatherers, Farmers, Gods and Human Sacrifice




Stories and Shamans

An examination of Stone Age humanity reveals that people lived in packs: in extended families, in clans or sometimes a grouping of clans called a tribe. They moved about, scavenging, hunting game and gathering food that grew wild. They had sticks, bone, stones and twine for tools. Strangers they came upon, or outsiders they knew, they did not necessarily see as fellow humans. There was no scientific understanding of the difference between a human and beast. Ethnocentrism was extreme. Stone Age communities called themselves "the people," as if there were no other humans.

There was fear that strangers they came across might attack them, put some evil spirit upon them or steal their women, and attacks and the stealing of women sometimes occurred. This and an endless camping trip with all of one's relatives was bound to produce disagreeable moments. In Colin Turnbull's study of the people of the Ituri forest in the 1950s, published as The Forest People, we see that a community of hunter-gatherers sometimes quarreled, and a quarrel might escalate into a brawl as people took sides, with the violence burning itself out before it destroyed or endangered the community.

Rules in earliest human societies were created through discussion. There was no written law or holy book from which to take guidance. No one presumed to be above others in authority. No one exhorted the group about laws laid down by any of the spirits whose presence they felt. There were no preachers or priests, but there were shamans - another word for witchdoctor. And in Stone Age societies almost anyone could be a shaman. They claimed to be in communication with spirits, but, rather than command, the shamans merely described, or suggested, and performed what they and others imagined were cures. Shamans strutted, or danced, or made shouting noises in an attempt to display their powers. Many helped themselves to visions by using hallucinogenic drugs, perhaps from the bark of a tree. It was the community that had authority - everyone and no one. From what has been seen of such societies, it appears that, in general at least, individuals did not pray for themselves. Their work and their prayers were community endeavors. Their relationship with their gods was as a group. Individuals identified their welfare with the welfare of the group, and morality was what they found to be best for the group.

Stone Age people did have an understanding of simple cause and effect: I drink water and my thirst goes away; you hit me and I hurt; I sleep and I awake rested; I eat this root and I become sick. They were skilled in the techniques of hunting and gathering. Beyond these immediate realities they invented explanations as to how the world worked. It was through stories that people thought they understood the world around them - stories that passed from generation to generation. People, it seems, wondered about the world around them, as bright children do today. Stone Age people let their imaginations run. Stone Age people did not believe in skepticism or suspended judgment. They had no idea of progression in discovery and knowledge. They did not believe in progress.

Their stories merely changed. Their stories were often fanciful and impulsive rather than systematic. Within a tribe might be variations on the same story. With free imagination as the source of the stories, across generations their stories were embellished and altered. Stone Age people told their stories without demand for consistency or empirical verification. The element of free imagination would make their stories appear to people of later ages as childlike, incomplete or absurd. But Stone Age people accepted the stories as true because these were the explanations of their mothers, fathers, grandparents and clan or tribal leaders.

Stone Age people believed that they were living at the center of the universe, that the earth was a disk extending not far beyond known neighbors, mountains, or shorelines. They believed that all movement was the product of will. They saw insects as moving by will. They saw the sun, moon and stars closer than they were and as moving by will. For Stone Age people, will was spirit, and they saw their world as filled with many spirits. Or, to use another word: gods. This was the original polytheism.

When a person saw his reflection in the water he believed he was seeing his spirit - the invisible made visible by the magic of the water. (In modern times, Stone Age people might believe that a photographer had captured something of their spirit and for this reason object to being photographed.)

Seeing the lifeless bodies of those who had died, people believed the spirit of that person had left their body and gone to an invisible world where the spirits of the dead dwelled. And they believed that invisible spirits hovered around them.

People saw spirits as able to penetrate human bodies through the skin, nostrils, mouth, ears or other openings. Dreams, not being willed, were seen as invasions by a spirit during one's sleep. Sickness was seen as an invasion by an evil spirit, and cures were sought in the form of having the invading spirit exorcised from oneself - a practice that survived into modern times.

People saw spirits as able to invade things as well as persons. If a rock happened to have a shape that reminded one of a dead uncle it might be because the spirit of the uncle had invaded and become a part of that rock. Spirits were imagined to have taken up residence in stone or wooden idols. Spirit, they believed, was invisible and in everything.

Not yet interested in strict categories, people did not think about the difference between what they saw as spirit and what was later to be called materiality. And not having defined the difference between spirit and materiality, they believed that if one ate a portion of the body of a strong beast, such as a bear, one might acquire the spirit of the bear, or, if one ate a portion of the body of a deceased king one might acquire the special qualities of that king. The flesh of timid animals might be avoided in fear of ingesting timidity.

And not having defined a difference between spirit and materiality, Stone Age people believed that in preserving a corpse they were helping to preserve the spirit of one who had died. And they believed that they could nourish the spirit of the corpse by putting gifts of food alongside it.
Magic and Religion

Not knowing how the world worked, Stone Age people attributed everything to the magic of the spirits. Birds flying or hovering on an updraft of air without falling to the ground was magic. Lightning, thunder, rain, the tides, and procreation were magic. Fire was magic and it was spirit, for it moved itself, and, when water was thrown upon it, it uttered a cry like a slain animal.

Seeing everything in nature as spirit they respected it in its many forms. Also, they recognized their dependence on some of what the spirits had to offer. They feared the power of the spirits and deprivation. People saw spirits as having emotion. Lightning, thunder, strong winds high seas and floods were anger. People feared the anger of the spirits and hoped to placate them with kind words and gifts through a magic of their own.

How the world came into being was explained in stories about the doings of the spirits, a common story being of a male god of sky and the mother god that was earth giving birth to gods that were atmosphere and other phenomena. The imagination of those who created the stories was limited to the world that they could understand. They spoke of gods having created humanity out of earth, tree bark and other ingredients. A god was described as having created plants, beasts and humans, and a story described why the spirits were immortal and humans merely mortal.

They believed that their gods had made the world what it is and that their society and the world would always be as the gods had made it. They had no sense of social progress or image of humanity's capabilities. The imagination of those who had a biological potential for genius, and others of normal intelligence, was limited by their culture. Had it been otherwise, modern times would have come much sooner than it did.

Limited in their view of the breadth of the world, people believed the gods had made their surroundings especially for them. The gods were their gods, and seeing their most powerful god as having their interests at heart they tended to see this god as good. When something went wrong, as in failures at hunting or sickness and death, a society might engage in a ritual to make things good again by waking up the Great Spirit. In another society, calamity might be believed to be the product of people disobeying their gods.

Unrestrained in self-confidence, they believed that if the gods could perform magic so too could they. The earliest form of religious ritual was an attempt at magic through imitation - such as painting a face on the belly of a pregnant woman in hope that the magic of the drawing would encourage birth. There were also ritual fasts or trances that were believed to invoke magic, done in order to receive from the spirits the skills needed to be a good hunter or warrior.

Also common were rituals that we call funerals. The participants wailed and cried with exaggeration to demonstrate that they cared for the dead person, fearing that otherwise the spirit of the dead person might return in anger and haunt or harm them.

Funeral ritual for some tribes included burying their dead. Some other tribes cremated their dead. A tribe in the Amazon jungle in the 20th century, the Yanomami, opted for cremation, believing that burying bodies in the ground was a horrible indignity for the dead. One of their rituals was to grind the ashes of a dead person into a soup, which they drank, believing that the dead would be unhappy if they did not have a resting place within the bodies of their relatives.

Seeing matter and spirit as the same while guarding themselves against the dead, ancient Greek warriors had a ritual of cutting off the fingers from the sword hand of an enemy they had slain, in order to prevent revenge by his spirit.

Stone Age people were wary of enemies performing magic against them. If one suffered from an illness it was often attributed to the evil intentions of someone exercising his magic, perhaps someone with whom one had had an argument, or someone from a neighboring tribe that he had recently met. One might wear a pendant made from a small stone, or perhaps a piece of copper thinned by pounding, as an object of magic to ward off evil.

And to avoid evil, taboos were created. Speaking the name of a dead king might be taboo for fear of evoking a ghost with too much power. Speaking the name of a weapon might be taboo because it would leave the weapon open to hostile magic, making it ineffective. Stone Age people took care not to let a personal object fall into the hands of an enemy, who could then use the spirit in that object to send evil against them - similar to or worse than a modern person losing his credit card.

Ritualized magic differed slightly from tribe to tribe, and the stories that supported the rituals also differed. Early in the twentieth century differences in Stone Age religions put academicians at great labor and debate. Unlike their Stone Age ancestors, the scholars were concerned with definitions. Emerging from these debates was the commonly accepted belief that religion included both ritual and myth, and the scholars created a label for the religion common among Stone Age people:animism. Their definition of animism was simple and therefore easy to agree upon: the belief that spirit permeates all.
Agriculture and Fertility Gods

By 10,000 BCE, humans had spread into virtually all habitable places on earth. In the northern hemisphere between the years 10,000 and 8,000 the last of the continental glaciers retreated. Where the glaciers retreated, agriculture began to replace, in small steps, hunting culture. In an area called the Fertile Crescent, hunter-gatherers camped alongside fields of wild wheat or barley, and cereals. Here was also the game - such as gazelles. Soon they were planting gardens to supplement their hunting. By 7000 BCE, in hilly regions, settlements of from 50 to 100 persons emerged. There were long dry summers and rainy winters. The soil was thin but fertile. The planting of seeds had become a major source of food. People began growing grains and vegetables and raising sheep and goats, and their farming anchored them to one place.

Agriculture was also spreading to Greece. And around 6000 BCE, agriculture was developing independently among hunter-gatherers in southern Mexico. In North Africa along the upper Nile River, people were growing sorghum, millet and wheat. By 5500, people were planting crops in China. By 4500, agriculture had spread from Greece into central Europe where, by 4000 BCE, people were using a wooden plow.

By the year 4500, farming had reappeared in Africa south of the Sahara in the Niger Basin in the West. The Sahara at this time was grass and woodland with an abundance of rainfall, rivers, lakes, fish and aquatic life. People there were growing crops and raising sheep, goats and cattle.

Farming created more food, and more food made possible more people. More people kept farming communities on the brink of inadequate nutrition. And farmers were more dependent on nature than were hunter-gatherers, who were free to drift from drought to areas that had more game and wild foods. Domesticated plants were vulnerable to insect ravages in ways that wild plants were not. Archaeologists have found in the bones of children in agricultural societies more signs of malnutrition than that of people living from hunting and gathering, and the average height of early farming populations has been discovered to be shorter than that of hunter-gatherers.

Also, more populous societies lived amid a greater lack of sanitation. People were careless about their refuse, their sewage and water supply. They knew nothing about bacteria, and their ignorance was costly. They suffered from disease epidemics that had been rare among hunter-gatherers. Perhaps fewer than half of the children of agricultural societies lived past the age of ten.

Needing rain for their crops, people in agricultural societies tried evoking magic in the form of imitation. Where frogs came out when it rained, witchdoctors might croak like frogs to suggest to their gods that they should start the rain.

With agriculture came gods of fertility. Farmers knew enough about fertility to associate it with sexual intercourse. They believed that their gods created sexually, a father and mother god having created son and daughter gods, and men and women copulated in their fields as religious ritual to suggest to their gods that they should make their crops grow.

Where growing seasons passed, people saw their fertility god as having died, and when the growing season returned they saw their god as having been resurrected - the beginning of resurrection as a concept. One such god worshipped by the Greeks was Adonis. Adonis was believed to spend his annual death with the goddess Persephone in Hades - otherwise known as hell. Each year when the growing season returned he was seen to have been resurrected, and he was believed to be living in blissful union with the fertility goddess of love, Aphrodite.

In agricultural societies, misfortune was explained as the work of displeased gods, and early farmers were eager to please the gods by sending them what gifts they could. It was believed that killing someone or an animal sent that creature, in the form of spirit, to the invisible world of the gods. People saw the sending of one or a few members of their society to the gods as a good bargain insofar as it served the survival of the entire society. Or someone might be sacrificed who had been a stranger seized on some pathway or held captive from war - solving the problem what to do with a war captive, who would otherwise draw on the people’s precious supply of food.

Animal and human sacrifices appear to have been less prevalent in societies of hunter-gatherers, such as those on the plains of North America and in Australia. Sacrificing people took place among agricultural people in India, Egypt and elsewhere in agricultural Africa and among the farmers of Europe and the Middle East.

Recommended Books

The Dawn of Belief: Religion in the Upper Paleolithic of Southwestern Europe, by D.Bruce Dickson, 1996

The Forest People, by Colin M. Turnbull, 1968

The Quest for Food: Its Role in Human Evolution & Migration by Ivan Crowe, 2000

martes, 27 de mayo de 2008

Crystal Skulls Fuel Controversy, Fascination



Crystal skulls are not uncommon or terribly mysterious. Thousands are produced every year in Brazil, China, and Germany. But there are a handful of these rather macabre objects that have fueled intense interest and controversy among archaeologists, scientists, spiritualists, and museum officials for more than a century.
Photo: Crystal skull
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There are perhaps a dozen of these rare crystal skulls in private and public collections. Some are crystal clear, others of smoky or colored quartz. Some are actual human size and of very fine detail, while others are smaller and less refined. All are believed to originate from Mexico and Central America.

Many believe these skulls were carved thousands or even tens of thousands of years ago by an ancient Mesoamerican civilization. Others think they may be relics from the legendary island of Atlantis or proof that extraterrestrials visited the Aztec sometime before the Spanish conquest.

Supernatural Fascination

Stories about the skulls focus heavily on their perceived supernatural powers.

Joshua Shapiro, coauthor of Mysteries of the Crystal Skulls Revealed, on his Web site cites claims of healings and expanded psychic abilities from people who have been in the presence of such skulls.

"We believe the Crystal Skulls are a form of computer which are able to record energy and vibration that occur around them," he writes. " The skull will pictorially replay all events or images of the people who have come into contact with them (i.e. they contain the history of our world)."

Most archaeologists and scientists are skeptical, to say the least.

Skulls were prominent in ancient Mesoamerican artwork, particularly among the Aztec, so the connection between these artifacts and these civilizations is apt.

"[I]t was a symbol of regeneration," says Michael Smith, a professor of anthropology at Arizona State University. "There were several Aztec gods that were represented by skulls, so they were probably invoking these gods. I don't think they were supposed to have specific powers or anything like that."

All Fakes?

In addition, recent electron microscope analyses of skulls by the British Museum and the Smithsonian Institution revealed markings that could only have been made with modern carving implements. Both museums estimate that their skulls date to sometime in the mid- to late 1800s, a time when public interest in ancient cultures was high and museums were eager for pieces to display.

Its examinations and the fact that no such skull has ever been uncovered at an official archaeological excavation led the British Museum to extrapolate that all of the famed crystal skulls are likely fakes.

There is passion on both sides of the issue, and the fact remains that no one knows for sure who made these skulls and when. And since there is currently no way to accurately determine the age of such inorganic objects, the mystery will likely continue. In fact, it's sure to get a boost in 2008 with the release of the action-adventure sequel Indiana Jones and the Kingdom of the Crystal Skull.

viernes, 23 de mayo de 2008

Mexico Pyramid of Death



At the Pyramid of the Moon in central Mexico, humans and animals were buried alive. Excavations reveal the remains of sacrifices once witnessed by thousands of spectators.

Even the ferocious Aztec were awed by their first glimpse of Teotihuacan. By the 13th century when the Aztec swept into central Mexico, the once teeming city—which reached its zenith around A.D. 400—had been long since abandoned by its mysterious builders. Its grand ceremonial center, where tens of thousands of people had gathered amid sacred monuments of stone, lay under thick green overgrowth. The Aztec gave the site its name and identified its most imposing features according to their own beliefs—the Pyramid of the Sun and Pyramid of the Moon. Assuming that some of the buildings were tombs, they called the main thoroughfare Street of the Dead.

They were, as it turns out, uncannily accurate. Burials both rich and gruesome have recently been discovered in the Pyramid of the Moon during excavations headed by Rubén Cabrera Castro, of Mexico's National Institute of Anthropology and History, and Saburo Sugiyama, of Japan's Aichi Prefectural University. Tunneling deep into the 140-foot-tall (43 meters) stone structure, the archaeologists located five burial sites. After most of the dirt and debris had been dug out, each site was reinforced with steel beams for safety. Supplied with fresh air pumped in from the outside, the archaeologists scraped the last layers of earth from the floor to reveal scenes of carnage: disembodied heads and the remains of foreign warriors and dignitaries, carnivorous mammals, birds of prey, and deadly reptiles.

Evidence indicates that all the victims were ritually killed to consecrate successive stages of the pyramid's construction. The earliest sacrifice, from about A.D. 200, marked a substantial enlargement of the building. A wounded foreigner, most likely a prisoner of war, was apparently buried alive with his hands tied behind him. Animals representing mythical powers and military might surrounded him—pumas, a wolf, eagles, a falcon, an owl, and rattlesnakes—some buried alive in cages. Finely crafted offerings included weapons of obsidian and a figurine of solid greenstone, perhaps a war goddess to whom the burial was dedicated. Each subsequent burial was different, but all had the same aim: "Human sacrifice was important to control the people," says Sugiyama, "to convince them to do what their rulers wanted."