Oxygen
Was Aaron Hernandez Gay?
A new documentary explores the football player's rumored battle with homosexuality.
Man Killed After Being 'Sucked' Into MRI Machine
A hospital staff member had assured the victim that the machine was turned off.
Early Animals Survived Without Oxygen
New findings about the planet's distant past deepen mysteries of evolution.
Oxygen Is Disappearing From the World's Oceans
The ocean can't seem to catch a break—or its breath.
Eric Garner's Daughter Is Brain-Dead: Report
The daughter of Eric Garner, whose death helped spark the Black Lives Matter movement, suffered a heart attack Saturday.
Mars Settlers Could Breathe Thanks to Cold Plasma
Scientists want to make sure people will be able to breathe more easily on the red planet.
Mass Extinction Caused by Carbon Emissions Similar to Today's
Scientists say the biggest extinction event ever was caused by comparable rate of cO2 emissions to those seen today.