Lady, you're on the money

So far, women whose portraits appear on U.S. money have been a party of three. Excluding commemorative currency, only Sacagawea, Susan B. Anthony and Helen Keller appear on coins in general circulation, according ...

dateJul 03, 2015 in Other
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The math of shark skin

"Sharks are almost perfectly evolved animals. We can learn a lot from studying them," says Emory mathematician Alessandro Veneziani.

dateJul 03, 2015 in Plants & Animals
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