Muskrats as a bellwether for a drying delta

The muskrat, a stocky brown rodent the size of a Chihuahua—with a tail like a mouse, teeth like a beaver and an exceptional ability to bounce back from rapid die-offs—has lived for thousands of years in one of Earth's ...

Wolves scare deer and reduce auto collisions 24%, study says

Ecologist Rolf Peterson remembers driving remote stretches of road in Michigan's Upper Peninsula and seeing areas strewn with deer carcasses. But that changed after gray wolves arrived in the region from Canada and Minnesota.

Yellowstone National Park is hotter than ever

Yellowstone National Park is famous for harsh winters but a new study shows summers are also getting harsher, with August 2016 ranking as one of the hottest summers in the last 1,250 years.

Scientists plumb the depths of the world's tallest geyser

When Steamboat Geyser, the world's tallest, started erupting again in 2018 in Yellowstone National Park after decades of relative silence, it raised a few tantalizing scientific questions. Why is it so tall? Why is it erupting ...

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