Researchers use satellites to learn about grizzly bear habitats

Therefore, to protect these bears,researchers want to take a closer look at the seasonal interaction between grizzlies and plants to identify areas of the highest quality habitat.This begins 700 kilometers up in space.Up here, two NASA satellites carry sensors that are sensitive to the light reflected by vegetation.Every species of plant reflects a unique combination of wave lengths,called spectral signatures that act like different chords on a piano but use light instead of sound.