Earth is facing two major natural threats: one from deep space and one from beneath our feet. In this playlist, we look at ...

Scientists studied ancient fungal spores and discovered Earth may already have been under stress before the asteroid wiped out the dinosaurs.

A newly discovered asteroid will make a close encounter with Earth on Monday. Calculations show it will be significantly closer than the distance between Earth and the moon.

The investigative minds at How to Survive examine catastrophic asteroid impact data and the global extinction-level effects ...