Epicenter: While transporting a computer hacker, an FBI agent gets caught in the middle of a devastating earthquake.

The chain reaction: A dangerous leak in a nuclear waste storage facility threatens to contaminate a community's water source as an egineer races to warn them.

The day the earth moved: An aerial photographer hurries to warn a tiny desert community that an earthquake is imminent.

Fire from below: The mining of a highly-reactive substance poses a serious explosive threat to seismologist Jake Denning and everyone else in its path.

The day the sky exploded: As meteors begin slamming into the Earth, the world's best scientists put their heads together in a last-ditch attempt to save the planet.