Grass fires burn far more American homes each year than forest fires. In southern Arizona, communities fight fires that never ...

Far from being barren wastelands, deserts are biologically rich habitats with a vast array of animals and plants that have adapted to the harsh conditions there. Some deserts are among the planet ...

But even small changes in temperature or precipitation could drastically impact plants ... desert landscapes by eliminating slow-growing trees and shrubs and replacing them with fast-growing grasses.

FEEDING: Desert grasses and spring wildflowers are tortoises' primary nutritional source. In summer, dry grass stems and cactus pads are main sources of sustenance. Tortoises may eat some nonnative ...

The new discovery suggests that researchers are far from documenting all of the plant diversity of the Chihuahuan Desert, which covers parts of Mexico and the southwestern U.S. "While many assume that ...