Increasing acidity in the world’s oceans is changing the structure of sharks’ teeth and making them weaker, according to a ...

Sharks' teeth—some of nature's sharpest and most formidable weapons—may not withstand the effects of future ocean acidification, new research suggests. Scientists at the Heinrich Heine University ...

A group of German scientists tested the effects of a more acidic ocean on sharks’ teeth and found that future generations of ...

On a cold Monday morning near the Springmaid Pier in Myrtle Beach, ocean waves are lapping onto Charles Shelton Jr.’s black, rubber boots as he dips his metal scoop into the sand and examines its ...

Analyzing over 9,000 fossil shark teeth reveals that today’s sharks occupy less ecological space than their ancient counterparts. (Maggie Martorell/Miami Herald/Tribune News Service via Getty Images) ...