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Medical Rescue Team

Photo: Evacuation team with suits, gear, and airplanes
Members of a rescue team from the U.S. Army Medical Research Institute of Infectious Diseases conduct a drill with an evacuation chamber at an airport in Martinsburg, West Virginia. These chambers are airtight, can be sterilized on the outside, and are used to quarantine and move people exposed to infectious agents, such as smallpox.
Photograph by Karen Kasmauski

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.