Earth
- Environment
Lessons from a lonely tortoise
In the Galapagos Islands, scientists are struggling to save some of the most endangered creatures in the world.
- 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.
- Environment
Where have all the bees gone?
More than one-fourth of the honeybees in the United States have disappeared since last fall, and scientists are trying to figure out why.
- 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.
- Animals
Life on the Down Low
The first scientific survey of organisms in the deep waters off Antarctica has discovered lots of life.
- Environment
Food web woes
If sharks disappeared from the oceans, rays might thrive, but shellfish would probably suffer.
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- Earth
Petrified lightning
Sand turned into glass by a lightning strike can provide clues about ancient climates.
- Environment
Life under ice
Researchers unexpectedly find a community of sea creatures in the ocean beneath an ice shelf.
