Oxygen

A new documentary explores the football player's rumored battle with homosexuality.

A hospital staff member had assured the victim that the machine was turned off.

New findings about the planet's distant past deepen mysteries of evolution.

The ocean can't seem to catch a break—or its breath.

The daughter of Eric Garner, whose death helped spark the Black Lives Matter movement, suffered a heart attack Saturday.

Scientists want to make sure people will be able to breathe more easily on the red planet.

Scientists say the biggest extinction event ever was caused by comparable rate of cO2 emissions to those seen today.