Polluted air, laden noxious gasses or tiny, invisible particles that burrow into human bodies, kills 7 million people ...

Red-and-green-tinted clouds drift through the Martian sky in a new set of images captured by NASA's Curiosity rover using its ...

Scientists have discovered a remarkable new form of symbiosis — a bacterium that lives inside a single-celled organism (a ...

Demetrius Frazer is set to die by nitrogen gas for the murder of 41-year-old Pauline Brown in Birmingham, Alabama in 1991.