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LifeA gland grows itself
Japanese researchers coax a pituitary to develop from stem cells in a lab dish.
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LifePrehistoric horses came in leopard print
Dappled animals, once thought to be the result of selective breeding after domestication, were around when early humans depicted them on cave walls.
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LifeSchool rules
Fish coordinate with one, or perhaps two, of their neighbors to make group travel a swimming success.
By Devin Powell -
PaleontologyDNA suggests North American mammoth species interbred
Supposedly separate types may really have been one.
By Susan Milius -
LifeGiant beavers had hidden vocal talents
With air passageways in its skull like no other animal known, an extinct outsized rodent may have made sound all its own.