Wildlife managers, scientists and conservationists have a more complete ecological map of the American West with the release today (Thursday) of 36 new big-game migration routes by the U.S. Geological ...

West Nile virus causes fever and other symptoms in about 1 in 5 cases, according to the CDC. It is the most common mosquito-borne disease in the US.

Landscape Explorer shows how much the American West has changed. ... which will pull up a modern Google map of the United States beside a black-and-white aerial image of the western states circa 1950.