This microscopic parasite lives inside salmon and is the only known animal that doesn’t require oxygen. It lacks mitochondria ...

Frogfish are some of the most colorful creatures under the sea — and some of the most unique, too. They look more like frogs than fish with their leg-like fins and their quick-snapping jaws, but they ...

Washing your hands is a given if you want to avoid infection—but it's especially important after touching these top 10 ...

The former officer listed at least 10 people who bought steroids from him, including at least three with ties to the Contra ...

Deep-sea mining could unleash clouds of debris that threaten a mysterious, vital ecosystem we barely understand.