Feature
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Milky Way will bite the dust
Eventual collision with Andromeda to shake up the solar system.
By Nadia Drake -
Kissing, and missing, human cousins
DNA paints a contested picture of Stone Age interbreeding.
By Bruce Bower -
Polar bears have seen hard times
Two genetic studies extend the Arctic icon’s lineage way back.
By Susan Milius -
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Finding new ways to spell L-I-F-E
XNA molecules join DNA and RNA in the genetic catalog.
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Prions may cause Alzheimer’s
Similarity found with destructive protein behind mad cow.
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Earth’s new neighbor looks familiar
Planet discovered in Alpha Centauri, just a few light-years away.
By Nadia Drake -
- Science & Society
Scientists take on Twitter
Social media comes into its own as a tool and a subject for study.
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- Humans
Bionic women (and men) get closer to reality
Prosthetics and new therapies restore abilities to move, see, walk.