Solar plane to set out to cross U.S. in early May

By Braden Reddall

MOUNTAIN VIEW, California (Reuters) - The first crossing of the United States by a solar-powered plane is expected to start in just over a month, its creators said on Thursday, as they make final preparations for an attempt two years from now at the first round-the-world flight without any fuel.

Swiss pilot Bertrand Piccard and project co-founder and pilot Andre Borschberg, whose Solar Impulse made its first intercontinental flight from Spain to Morocco last June, aim for their plane to take off from near San Francisco in early May and land at New York's John F. Kennedy airport about two months later.

With the wingspan of a jumbo jet and weighing the same as a small car, the Solar Impulse is just a test model for the team as they build a new aircraft they hope will circumnavigate the globe in 2015.

The project began in 2003 with a 10-year budget of 90 million euros ($112 million) and has involved engineers from Swiss lift maker Schindler and research aid from Belgian chemicals group Solvay -- backers who want to test new materials and technologies while also gaining brand recognition.

Unveiling the current plane at a news conference at Moffett Field on San Francisco Bay, Borschberg highlighted the cramped conditions of the cockpit in the Solar Impulse.

"That's a bad economy seat - you would not fly on this airline," he joked. "The next one should be good business class."

While the current plane was set up for 24-hour flights, the next one would have to allow for up to five days and five nights of flying by one pilot - a feat never yet accomplished.

Meditation and hypnosis were part of the training for the pilots as they prepare to fly on very little sleep, Borschberg said, adding that some sort of autopilot system would have to be built on the next plane to allow for some rest.

The plane runs on about the same power as a motor scooter, he explained, powered by 12,000 solar cells built into the wing that simultaneously recharge the batteries - with storage equivalent to that of a Tesla electric car.

The plane has already flown a 26-hour flight, back in 2010, to prove continuous flight was possible with charging taking place in the day and battery power working at night.

Piccard, asked about the downside of solar-powered flight, agreed that there is a price paid for the small carrying capacity and massive wings.

"In that sense, it is not the easiest way to fly," he said. "But it is the most fabulous way to fly, because the more you fly, the more energy you have on board."

The first stop for the Solar Impulse as it crosses the United States will be Phoenix, followed by Dallas and then one of three cities: Atlanta, Nashville or St. Louis. It will then stop outside Washington D.C. before heading on to New York.

"It carries one pilot and zero passengers, but it carries a lot of messages," Piccard said. "We want to inspire as many people as possible to have that same spirit: to dare, to innovate, to invent."

Piccard has a pioneering legacy to maintain. His grandfather helped his father, Jacques, build a revolutionary submarine that Jacques co-piloted on the deepest-ever dive. Bertrand said he believes the basic idea behind this spirit is to find out what you deeply believe, and then try the opposite.

"Innovation is not about new ideas, it's about getting rid of old ideas."

(Reporting by Braden Reddall in San Francisco; Editing by Leslie Adler)

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Evidence of Early Life Draws Ire from Scientists

Life may have first emerged on land about 100 million years earlier previously thought, suggests a study that has scientists up in arms, many of whom are arguing that the research paper should never been published in the first place.

The study, published today (Dec. 12) in the journal Nature, suggests that ancient fossilized creatures found in Southern Australian sediments actually came from land, not from the ocean. If the findings are true, the fossils would have been lichenlike plants that first colonized land, not ocean-dwelling ancestors of jellyfish.

"We have big organisms living on land a lot further back than we thought before," said study author Gregory Retallack, a geologist and paleobotanist at the University of Oregon.

But the study has faced intense skepticism from several experts in the field — some of whom have questioned not only the study's scientific validity, but also its acceptance into a prestigious scientific journal.

"I find Retallack's observations dubious, and his arguments poor. That this was published by Nature is beyond my understanding," wrote Martin Brasier, a paleobiologist at the University of Oxford who was not involved in the study, in an email.

Primitive sea dwellers

Scientists first discovered the fossils in 1947 in the Ediacaran Hills of Southern Australia. The reddish rocks contained imprints from a strange, striated creature called Dickinsonia, as well as other primeval creatures that lived around 550 million years ago. [Extreme Life on Earth: 8 Bizarre Creatures]

Until now, scientists had long believed the rocks were made up of ocean sediments and that Dickinsonia and other primeval creatures fossilized in the outcroppings were sea dwellers similar to jellyfish or sea pens that lived just before the Cambrian explosion began about 540 million years ago, when all the major animal groups suddenly appeared.

But when Retallack first saw the fossils, he wondered whether they were formed on land. In particular, the fossils had a reddish hue that comes from oxygen in the atmosphere reacting with iron to create rust — a process that doesn't happen under the sea, he said. He also noticed that nodules throughout the rock looked strikingly similar to the rootlike structures put out by primitive lichen or fungi found in other ancient soils.

To see if some of the Ediacaran fossils were land-dwellers, he tested the rock's composition and found it was characteristic of the very first stages of soil formation on land, in which nutrients such as potassium and magnesium are depleted. A similar process doesn't happen in the ocean, he said.

In the current paper, Retallack argues that the ancient fossils are actually a primitive precursor to lichen or fungi and that they helped colonize land, paving the way for the Cambrian explosion.

Even today, lichen are the pioneers that first take root on bare rock, creating the precursors of soil (other organisms can grow on lichens).

"One of the first things that happens when you have a piece of bare ground is some lichen come in and eventually some new stuff comes in like dandelions, and pretty soon you've got a tall Douglas fir forest," Retallack told LiveScience.

Scientists skeptical

But several scientists have called his claims into question and wonder why Nature published the piece. [Top 10 Science Journal Retractions]

The rocks may have turned their reddish hue much more recently, some 65 million years ago, when they somehow rose above the water; in that scenario, the sediments could have been underwater at the time Dickinsonia and other Ediacaran creatures lived, Shuhai Xiao, a paleontologist at Virginia Tech wrote in an accompanying article in Nature. In addition, the chemical composition of the rocks doesn't preclude the fossils originating in the ocean.

What's more, some of the fossils are oriented as if they were dragged by current or ocean waves, Xiao wrote. Finally, many of the species Retallack reclassifies as land-dwellers are found elsewhere in the world in rocks that are unambiguously formed from ocean sediments.

Retallack's ideas "would represent a fundamental change in our picture of evolution, but they will probably face continuing skepticism because the evidence is unconvincing," he wrote.

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Ancient legends once walked among early humans?

Wild, hairy, folks who fought griffons and nomads — have paleontologists unearthed mythic figures of folklore?Siberia's Denisova cave held the pinky bone of an unknown early human species, a genetics team reported in March. The Naturejournal study, led by Johannes Krause of Germany's Max Planck Institute for Evolutionary Anthropology, offered no answer for what happened to this "archaic" human species, more than one million years old and living near their human and Neanderthal cousins as recently as 30,000 years ago.

But at least one scholar has an intriguing answer: "The discovery of material evidence of a distinct hominin (human) lineage in Central Asia as recently as 30,000 years ago does not come as a surprise to those who have looked at the historical and anecdotal evidence of 'wild people' inhabiting the region," wrote folklorist Michael Heaney of the United Kingdom's Bodleian Library Oxford, in a letter to The Times of London.

Wild people?

Herodotus, the father of historians, wrote about these human cousins, the "Arimaspians," around 450 B.C. They were "strong warriors, good horsemen rich in flocks of cattle and sheep and goats; they are one-eyed, 'shaggy with hairs, the toughest of men'," according to John of Tzetses, a writer of the Byzantine era. They also fought griffons, mythical winged lions with eagle's faces, for gold, according to Herodotus and his contemporary Aristeas, who clearly knew their stuff when it came to spicing up historical writing.

Heaney notes that legends of hairy wild people, or almases, have been standard fare in the Russian steppes for centuries. "The reports of wild men, although having typical mythic overtones, do often reflect what we know of primitive hominins," Heaney says, by e-mail. "The presumed almases of Central Asia could be any one of a number of pre-(homo) sapien ancestors."

What about their gold-mine-guarding griffon foes? In a 1993 companion piece to a look at the Arismaspians by Heaney, Stanford historianAdrienne Mayor, author of The First Fossil Hunters: Paleontology in Greek and Roman Times, suggested their legend sprang from dinosaur bones unearthed by nomads in their travels across the steppes of Western Mongolia.

"That region could well be Bayan-Ulgii aimag (province) in western Mongolia and environs, where I have wandered many long days and have seen ancient and contemporary small gold mines," says archaeologist Jeannine Davis-Kimball of the Center for the Study of Eurasian Nomads, who calls a dinosaur-bone origin for griffon stories reasonable. But as for Arimaspians being the same as the newly-discovered archaic humans, Davis-Kimball has pretty strong doubts.

"We have excavated Bronze Age hunters and gatherers and small villagers along the Eurasian rivers — these were the people that precede the nomads by a 1,000 or maybe even many more years. I've seen lots of skeletons from many locales in my travels from Hungary to Mongolia, but none that correlates with this new hominid line or with the one-eyed Arimaspians," Davis-Kimball says, by e-mail. "It's too difficult for me to believe that hominids living 1,000,000 years ago could be perpetuated in a myth to the time of Herodotus or about 450 BC."

Another explanation came in a 2008 Archaeology Ethnology & Anthropology of Eurasia journal study by Dima Cheremisin of the Russian Academy of Sciences who looked at the ancient Pazyryk people of Siberia, an Iron Age tribe whose burial mounds dot the Altai Mountains. "The mythical griffon is the most popular figure in Pazyryk art, suggesting that the Pazyryk people maybe identified with the 'griffons guarding gold,' mentioned by Aristeas and Herodotus," Cheremisin noted.

And cryptozoologists, who make a study of legendary creatures, have offered similar archaic human explanations in the past for sightings of the Yeti or Bigfoot. Bernard Heuvelmans, the father of modern cryptozoology, theorized in the 1980's that such sightings of the wild people could be based on ancestral memories of Neanderthals.

Of course, it does turn out that people seem to have interbred with Neanderthals, according to a May Science magazine report led by Svante Pääbo, a long-time ancient genome researcher who also was a co-author on the Denisova Cave discovery report. More than 50,000 years ago, most likely in the Near East, intermingling of early modern humans and Neanderthals led to modern-day Europeans and Asians typically having a genome that is 1- 4% Neanderthal, according to the study.

Such interbreeding is another staple of old stories. Hercules, the hero of Greek myths, walked around in a lion skin with a club over his shoulders and was wondrously strong, a bit like a Neanderthal, due to half-divine parentage.

Even the Old Testament contains references to Nephilim, "giants," who married people and had children.

"These stories go back millennia, but they don't go back that far," says biblical archaeologist Robert Cargill of UCLA. "There's no way that the author of the Book of Genesis had in mind Neanderthals." Most likely, ancient people were trying to explain the origin of tall people, Cargil says, and pointing back to a time when things were so bad that even semi-divine creatures were misbehaving.

Of course, it's fun to speculate. After all, researchers in 2003 discovered another human species, Homo floresiensis, nicknamed "hobbits" for their puny stature about three feet tall, who died out perhaps 12,000 years ago in Indonesia.

So we have hobbits, giants, and possibly cyclopean wild men, running around in prehistory. It's not quite The Lord of the Rings, but we can certainly forgive Herodotus for some of his taller tales.

Guidelines: You share in the USA TODAY community, so please keep your comments smart and civil. Don't attack other readers personally, and keep your language decent. Use the "Report Abuse" button to make a difference. Read more.

View the original article here

Ancient legends once walked among early humans?

Wild, hairy, folks who fought griffons and nomads — have paleontologists unearthed mythic figures of folklore?Siberia's Denisova cave held the pinky bone of an unknown early human species, a genetics team reported in March. The Naturejournal study, led by Johannes Krause of Germany's Max Planck Institute for Evolutionary Anthropology, offered no answer for what happened to this "archaic" human species, more than one million years old and living near their human and Neanderthal cousins as recently as 30,000 years ago.

But at least one scholar has an intriguing answer: "The discovery of material evidence of a distinct hominin (human) lineage in Central Asia as recently as 30,000 years ago does not come as a surprise to those who have looked at the historical and anecdotal evidence of 'wild people' inhabiting the region," wrote folklorist Michael Heaney of the United Kingdom's Bodleian Library Oxford, in a letter to The Times of London.

Wild people?

Herodotus, the father of historians, wrote about these human cousins, the "Arimaspians," around 450 B.C. They were "strong warriors, good horsemen rich in flocks of cattle and sheep and goats; they are one-eyed, 'shaggy with hairs, the toughest of men'," according to John of Tzetses, a writer of the Byzantine era. They also fought griffons, mythical winged lions with eagle's faces, for gold, according to Herodotus and his contemporary Aristeas, who clearly knew their stuff when it came to spicing up historical writing.

Heaney notes that legends of hairy wild people, or almases, have been standard fare in the Russian steppes for centuries. "The reports of wild men, although having typical mythic overtones, do often reflect what we know of primitive hominins," Heaney says, by e-mail. "The presumed almases of Central Asia could be any one of a number of pre-(homo) sapien ancestors."

What about their gold-mine-guarding griffon foes? In a 1993 companion piece to a look at the Arismaspians by Heaney, Stanford historianAdrienne Mayor, author of The First Fossil Hunters: Paleontology in Greek and Roman Times, suggested their legend sprang from dinosaur bones unearthed by nomads in their travels across the steppes of Western Mongolia.

"That region could well be Bayan-Ulgii aimag (province) in western Mongolia and environs, where I have wandered many long days and have seen ancient and contemporary small gold mines," says archaeologist Jeannine Davis-Kimball of the Center for the Study of Eurasian Nomads, who calls a dinosaur-bone origin for griffon stories reasonable. But as for Arimaspians being the same as the newly-discovered archaic humans, Davis-Kimball has pretty strong doubts.

"We have excavated Bronze Age hunters and gatherers and small villagers along the Eurasian rivers — these were the people that precede the nomads by a 1,000 or maybe even many more years. I've seen lots of skeletons from many locales in my travels from Hungary to Mongolia, but none that correlates with this new hominid line or with the one-eyed Arimaspians," Davis-Kimball says, by e-mail. "It's too difficult for me to believe that hominids living 1,000,000 years ago could be perpetuated in a myth to the time of Herodotus or about 450 BC."

Another explanation came in a 2008 Archaeology Ethnology & Anthropology of Eurasia journal study by Dima Cheremisin of the Russian Academy of Sciences who looked at the ancient Pazyryk people of Siberia, an Iron Age tribe whose burial mounds dot the Altai Mountains. "The mythical griffon is the most popular figure in Pazyryk art, suggesting that the Pazyryk people maybe identified with the 'griffons guarding gold,' mentioned by Aristeas and Herodotus," Cheremisin noted.

And cryptozoologists, who make a study of legendary creatures, have offered similar archaic human explanations in the past for sightings of the Yeti or Bigfoot. Bernard Heuvelmans, the father of modern cryptozoology, theorized in the 1980's that such sightings of the wild people could be based on ancestral memories of Neanderthals.

Of course, it does turn out that people seem to have interbred with Neanderthals, according to a May Science magazine report led by Svante Pääbo, a long-time ancient genome researcher who also was a co-author on the Denisova Cave discovery report. More than 50,000 years ago, most likely in the Near East, intermingling of early modern humans and Neanderthals led to modern-day Europeans and Asians typically having a genome that is 1- 4% Neanderthal, according to the study.

Such interbreeding is another staple of old stories. Hercules, the hero of Greek myths, walked around in a lion skin with a club over his shoulders and was wondrously strong, a bit like a Neanderthal, due to half-divine parentage.

Even the Old Testament contains references to Nephilim, "giants," who married people and had children.

"These stories go back millennia, but they don't go back that far," says biblical archaeologist Robert Cargill of UCLA. "There's no way that the author of the Book of Genesis had in mind Neanderthals." Most likely, ancient people were trying to explain the origin of tall people, Cargil says, and pointing back to a time when things were so bad that even semi-divine creatures were misbehaving.

Of course, it's fun to speculate. After all, researchers in 2003 discovered another human species, Homo floresiensis, nicknamed "hobbits" for their puny stature about three feet tall, who died out perhaps 12,000 years ago in Indonesia.

So we have hobbits, giants, and possibly cyclopean wild men, running around in prehistory. It's not quite The Lord of the Rings, but we can certainly forgive Herodotus for some of his taller tales.

Guidelines: You share in the USA TODAY community, so please keep your comments smart and civil. Don't attack other readers personally, and keep your language decent. Use the "Report Abuse" button to make a difference. Read more.

View the original article here