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When You Learn, Your Brain Swells with New Cells — Then It Kills Them
By Rafi Letzter published
Brain cells are very competitive.

Your Hair Color and Sleep Habits May Come from Neanderthals
By Charles Q. Choi published
Neanderthal DNA could influence your skin tone, hair color, sleep patterns, mood and even smoking behavior, a new study finds.

You May Be More 'Neanderthal' Than You Thought
By Charles Q. Choi published
The newly sequenced genome of a female Neanderthal is revealing that our relatives may have passed on genes that today are linked to cholesterol levels, arthritis and other diseases.

Here's What the Last Common Ancestor of Apes and Humans Looked Like
By Charles Q. Choi published
The most complete extinct-ape skull ever found reveals what the last common ancestor of all living apes and humans might have looked like, according to a new study.

Blossoming Bisexual: World's 1st Flower Had Male and Female Parts
By Laura Geggel published

Human Ancestor Mated with 'Ghost Lineage' And the Proof Is in Your Spit
By Charles Q. Choi published
A protein that helps make human spit slimy reveals signs that the ancestors of modern humans interbred with an extinct human lineage that was an even more distant relation than Neanderthals.

Link to the Past: Evidence of Humanity's Oldest Ropes Unearthed
By Guy Gugliotta published
"Perfect forms" carved in ivory reveal humanity's oldest set of ropes, research suggests.

200,000-Year-Old 'Baby Tooth' Reveals Clues About Mysterious Human Lineage
By Charles Q. Choi published
DNA in a fossil from a young girl has revealed that a mysterious extinct human lineage occupied Asia longer than previously thought, allowing more potential interbreeding with Neanderthals.
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