This Week in Science: Dark Matter Map, Zombie Worms, Popping Knuckles

April 17, 2015 7:46 PM

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Seven days, lots of science in the news. Here's our roundup of some of the week's most notable and quotable items.

Humans evolved pointier chins than other animals as our faces got smaller--not as a way to cope with the strain of chewing, a new study claims.

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