Natural Disasters

Mega-quake: The 'big one' could happen soon, but probably not where you think

World Asteroid Day reveals threat to our planet from near-Earth objects

Time-lapse exposes the sinister beauty of the Calbuco volcanic eruption

How hurricanes are named (and why)

Remembering Mount St. Helens

Nepal's UNESCO-recognized architectural treasures shaken, destroyed by earthquake

Bigger earthquakes likely on Nepal's terrifying faults

The inspiring letter carried by climber killed on Everest

What it takes to become a CDC disease detective

Extreme locales and wild weather on an 'Angry Planet'

200 years ago Mount Tambora erupted. What happened next changed the world

2011 Japan tsunami unleashed ozone-destroying chemicals