What are the biggest threats to the Endangered Species Act?

Since Richard Nixon signed the Endangered Species Act 45 years ago, the law has been credited with rescuing many species from the threat of extinction. Among them: icons such as the bald eagle, gray wolf, grizzly bear, and ...

Robosquirrels versus rattlesnakes

Robot squirrels from the University of California, Davis, are going into rattlesnake country near San Jose, continuing a research project on the interaction between squirrels and rattlesnakes.

Studies find mixed results from sage grouse hunting restrictions

A thorough review of the history of sage grouse hunting and populations across the Intermountain West shows that declines in the bird's numbers have prompted significant reductions in hunting opportunities in recent decades—with ...

Interior: Grouse listing warranted but precluded

(AP) -- The Interior Department announced Friday that it won't list sage grouse as endangered or threatened but will classify the bird among species that are candidates for federal protection.

Greater sage-grouse more mobile than previously suspected

Greater Sage-Grouse are thought to return to the same breeding ground, or "lek," every spring—but how do populations avoid becoming isolated and inbred? A new study from The Condor: Ornithological Applications used thousands ...

Driven by climate change, fire reshapes US West

Wildfires in the U.S. have charred more than 10,000 square miles so far this year, an area larger than the state of Maryland, with large fires still burning in every Western state including many that are not fully contained.

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