Scientific Minds Want To Know
Stunning artifacts knocked into the sea off Alexandria 1,600 years ago are now being retrieved.
Also: THE BIG PICTURE
A famous half-billion-year-old fossil, one of the "weird wonders" from Canada's Burgess Shale, may be a cephalopod
Mystery spirals on Mars explained
Researchers discover what carved a pinwheel pattern into the planet's polar ice caps.
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'Ardi' sparks renewed ancestry debate
The ancient creature may not belong in the human evolutionary tree, a new study suggests.
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