May 31 2011
Arsenic Life: Fact or Fiction?
Scientists debate evidence, or lack thereof, for a microorganism with arsenic-laced DNA.
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May 19 2011
Eyes Take Gossip to the Heart
Hearing something bad about someone unfamiliar could make that person more recognizable.
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May 19 2011
Ancient Mammals Sniffed Their Way Smarter
By following their noses at night, these great-uncles of modern mammals paved the way for their descendants to evolve larger brains.
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May 04 2011
Heidelberg Man Links Humans, Neanderthals
What was thought to be a cousin turns out to be a parent on the human evolutionary family tree.
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May 03 2011
Tiny Robots Reveal Why We Share
Using simple robots to simulate genetic evolution over hundreds of generations, scientists shed light on why humans help each other.
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Apr 26 2011
Why Do Peacocks Have Spots on Their Feathers?
In the singles-bar approach to evolution, flashy plumage and other ornaments arise because they favor survival of the sexiest.
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Apr 20 2011
‘Hammer-Biter’ Mammal Built for Eating Crunchy Food
Meet "Hammer-Biter," a newly discovered marsupial that lived 10 to 17 million years ago and had hammer-like teeth.
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Apr 15 2011
First Signs of Lake Life Having Sex on the Beach
Complicated love on the rocks, sand, and shoreline of ancient lakes made early life interesting.
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Apr 12 2011
Bug Turns Pest Into Supermom
Many sweet potato whiteflies are coming down with an infection that turns them into supermoms, a bane for farmers.
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Apr 10 2011
Galactic Ecosystem Survival: Keep Your Head Down
To survive in a galaxy of hard knocks, should we stay quiet to avoid getting noticed by a potentially aggressive alien race?
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