News tagged with hypothesis

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Fossil egg links dinosaurs to modern birds

Researchers from Spain identified in Lleida a series of dinosaur eggs with a unique characteristic: They are oval in shape. The discovery represents proof in favor of the hypothesis that birds and non avian theropods, dinosaurs ...

Jul 12, 2012
4.5 / 5 (4) 0

Queen of spades key to new evolutionary hypothesis

(Phys.org) -- Sleight of hand is a trait that belongs mainly to humans. Or so scientists thought. Studies of common, microscopic ocean plankton named Prochlorococcus show that humans aren't the only ones w ...

May 11, 2012
5 / 5 (6) 4 | with audio podcast

Stem cells 'by default'

In spite of considerable research efforts around the world, we still do not know the determining factors that confer stem cells their main particular features: capacity to self-renew and to divide and proliferate. The scientist ...

Apr 12, 2012
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The Black Queen Hypothesis: A new evolutionary theory

Microorganisms can sometimes lose the ability to perform a function that appears to be necessary for their survival, and yet they still somehow manage to endure and multiply. How can this be? The authors of an opinion piece ...

Mar 27, 2012
4.1 / 5 (7) 25 | with audio podcast

Runner's high motivated the evolution of exercise

In the last century something unexpected happened: humans became sedentary. We traded in our active lifestyles for a more immobile existence. But these were not the conditions under which we evolved. David Raichlen from the ...

Mar 22, 2012
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