Climate
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- Animals
Polar bears in trouble
Melting ice is bad news for polar bears that live in northern Alaska.
- Climate
The best defense is a good snow fence
Science fair superstar Erica David shows how fences that trap snow can help the environment.
- Climate
Catching some rays
In a world with increasing energy needs, scientists are turning to plants for help in using solar power.
- Climate
A stormy history
The number of severe hurricanes in recent years may be normal, it turns out.
- Climate
Earth’s poles in peril
Scientists are paying increased attention to changes in Earth's polar regions, which are in danger because of global warming.
- Climate
Hot summers, wild fires
Rising temperatures and earlier snowmelts in the western United States have intensified forest fires.
- Animals
Missing moose
By studying population patterns, scientists hope to figure out why moose in some areas are in trouble.
- Climate
Warmest year on record
Last year's worldwide average temperature was the highest ever recorded by scientists.
- Climate
Arctic algae show climate change
Sediment from Arctic lakes shows that much of the Northern Hemisphere has been warming for many decades.
