Hot rock
Just what are volcanoes, and why do some of them explode?
Earthquakes
Earth tremors are going on all the time as the planet's rocks boil and move beneath us, but only some quakes do any damage. Find out why ..
Hurricanes explained
From tropical storms to full-blown hurricanes - find out how it happens here.
Tornadoes
A brief explainer ...
Indian Ocean tsunami
December 26 2004. An earthquake under the seabed near the Indonesian island of Sumatra sends shock waves through the ocean causing a huge tsunami. Trace its path across the Indian Ocean ...
Indian Ocean tsunami - destruction becomes apparent
Scroll around the region to see the devastation it caused.
Indian Ocean tsunami - the geology
The mechanics of the earthquake.
Indian Ocean tsunami - the destruction of Aceh
Aceh, on the northern tip of Sumatra, bore the full brunt of the tsunami.
Indian Ocean tsunami - warning system
The technology that could saves lives next time.
Indian Ocean tsunami - Cumbre Vieja
Geologists are concerned that the fragile structure of one of the Canary Islands might one day produce a super tsunami ...
Hurricane Katrina
August 29 2005. The Gulf coast of the United States is devastated by a category four hurricane. Use these animated graphic guides to find out more about how it happened, what it did, and the problems it left behind ...
Hurricane Rita
America's Gulf coast is hit for a second time.
Hurricane Katrina - New Orleans one year on
How parts of the city have recovered.
Kashmir earthquake
October 8 2005. At least 70,000 people are feared dead after a magnitude 7.6 earthquake struck Kashmir.
Kashmir earthquake journey
In the aftermath of the devastating quake, the Guardian sent filmmaker Fergus Tighe into the mountains of Kashmir to find out just how bad things were. Follow his journey here ...
India monsoon
July 2006. The monsoon comes early to India and Bangladesh, leaving chaos and death in its wake ....
Earthquake in Iran
December 26 2003. Up to 300,000 people are feared dead after a 6.3 magnitude earthquake hit the city of Bam in Iran.
Philippines - typhoon survivors
Rescued after 10 days trapped in a mudslide.
