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Cancer-Fighting Plants

Photo: A doctor picking a flower in an African rain forest for cancer research
Botanist James S. Miller combs a Madagascar rain forest for potentially cancer-fighting flowers. Here he picks a specimen from a tree of the Melastoma family that will go to the National Cancer Institute, which has identified thousands of plants active against cancer cells, more than half of which come from rain forests.
Photograph by Sarah Leen

Health and Human Body Topics

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Photo: Hot spring in Ethiopia's Danakil Depression

Pathways to a Greener World

Join the climate conversation.

2008 Grand Prize Winner

Photo Gallery

See who won this year’s grand prize trip to the Grand Canyon!

The Green Guide

Photo: Green flower

Get tips for helping the environment.

Support Conservation

Photo: Two penguins

Help conserve the world's natural resources.