Animal forensics, DNA used to estimate river otter population

The restoration of Pennsylvania's river-otter population has been, by all accounts, a great success, and a study being conducted by researchers in Penn State's College of Agricultural Sciences will soon quantify the accomplishment ...

NASA opens new era in measuring western US snowpack

(Phys.org) —A new NASA airborne mission has created the first maps of the entire snowpack of two major mountain watersheds in California and Colorado, producing the most accurate measurements to date of how much water they ...

Study shows best places to protect marine mammals

(AP) -- From sea otters to blue whales, marine mammals are under stress from climate change, ocean acidification, hunting and other threats. Researchers have identified 20 important sites around the world where they say ...