Satellite image shows fires
(red dots) in southern Mexico, the Yucatan Peninsula, and Central America.
From space, we've learned how common fires are around the world; about
90 percent are started by people. Fires may be a cheap way to prepare
ground for planting, but burning a forest may set in on the road to desertification.
Each year, people burn 750,000 to 8.2 million square kilometers of forest
and grassland. As global warming proceeds, experts
expect more fires. Photo from NASA
Gray shows haze from fires and industrial pollution
over Bangladesh and northeastern India on Feb. 14, 2003. Up north, the
Himalayan Mountains are largely snow-covered. Image
by Jacques Descloitres, NASA GSFC.
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