A great white shark opens its mouth for bait. (<a href=Photo via Flickr)" title="Great white shark arching body and opening mouth for bait (wide-angle)" width="1" height="1"/>

If sharks had a tooth fairy, they’d be ‘rolling in dough’

Unlike humans, who only get two sets of teeth, sharks can have up to 20 rows of spare teeth stored in their jaws. They lose and replace h ...

9 years ago

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Women and men sitting with baby carriages in front of the Sanger Clinic. (<a href=Photo via New York World-Telegram and the Sun Newspaper Photograph Collection in the Library of Congress) " title="clinic-3" width="1" height="1"/>

A century after the first birth control clinic opened, controversy remains

Margaret Sanger opened a storefront clinic in 1916, sparking the battleground over women’s reproductive rights. Brownsville, ...

9 years ago

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