142 dead turtles. Smashed shells. A 20-year researcher had never seen anything like it - until now.

Males were targeted. Females were left untouched. The reason comes down to the thickness of a shell.

Every winter, northern map turtles cluster together to hibernate in the water beneath a frozen lake. Then one year, their ...

Techniques developed to study the distant past—from dating ancient artifacts to reconstructing climate records in ice cores—are now being repurposed to help us better understand the lives of modern ...