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Discovery Channel
Comet (link: Extreme Earth in the Movies) Comet (link: Extreme Earth in the Movies)
The big trend in disaster movies began in 1972
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A tornado rising up into a huge, dark cloud
Anatomy of a Hurricane
Fire
Satellite view of a hurricane (link: Hurricanes) Bushfires (link: Fire)
Discover what makes a hurricane one of nature's most fearsome phenomena
Some islands were formed by lava slowly escaping through cracks in the seabed
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Screensaver
Understanding Earth
Penguins on an iceberg (Link: Earth Screensaver) Setting Sun (link: Understanding Extreme Earth)
From fire to ice - download stunning views of the natural world onto your desktop
By the 2080s average annual temperatures in the UK may rise by up to 3.5°C
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Photos: Corbis / NHPA