Recent Posts by Pangaea Biosciences

When Trilobites Ruled the World

 Trilobites may be the archetypal fossils, symbols of an archaic world long swept beneath the ruthless road grader of time. But we should all look so jaunty after half a billion years. At the Smithsonian’s National Museum of Natural History, Brian T. Huber, chairman of paleobiology, points to a flawless specimen of Walliserops, a five-inch trilobite that swam the Devonian…
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‘Tunnels’ and ‘spheres’ in meteorite revive debate over life on Mars

The discovery of tiny carbon-rich balls and tunnels inside a Martian meteorite has once again raised the possibility that the Red Planet was teeming with primitive life millions of years ago. The meteorite, which fell to Earth during the Stone Age, contains microscopic burrows and spheres that resemble the marks microorganisms leave when they eat…
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Competition breeds new fish species, study finds

Competition may play an important role during the evolution of new species, but empirical evidence for this is scarce, despite being implicit in Charles Darwin's work and support from theoretical studies. Dr Martin Genner from Bristol's School of Biological Sciences and colleagues used population genetics and experimental evidence to demonstrate a role for competition that…
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A Hunk Of Planet Dissolves Before Our Eyes

It begins with a growl. Then there's a crack — a slurpy, sucky, crunchy noise. A guy is on the phone, and his pal interrupts him and says, "It's starting, Adam, I think. Adam? It's starting ..." The two are up on a bluff, overlooking a giant ice field. They are standing next to time-lapse…
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Prehistoric Boy May Be Native American ‘Missing Link’

A prehistoric boy's DNA now suggests that ancient toolmakers long thought of as the first Americans may serve as a kind of "missing link" between Native Americans and the rest of the world, researchers say. The findings reveal these prehistoric toolmakers are the direct ancestors of many contemporary Native Americans, and are closely related to all…
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Arctic Sea Ice Melt Season Getting Longer

The summer melt season for Arctic sea ice has lengthened by a month or more since 1979, a new study finds. The primary culprit is a delayed fall freeze-up — the autumn chill when sea water freezes into ice — but the fallout remains the same: the Arctic ice cap is stuck in a vicious…
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