Mount Graham red squirrels live only in the Pinaleño Mountains of southeastern Arizona, where their protected habitat has ...

They’re as bright as fireflies, but far harder to find. Still, experts say it’s worth seeking a glimpse of these stunning ...

A new study argues that religion, politics and war affect how animals and plants in cities evolve, and the confluence of ...

This summer has been a good year for viewing lightning bugs or fireflies because of several weather conditions. Here's what you need to know.

Microsoft and our third-party vendors use cookies to store and access information such as unique IDs to deliver, maintain and ...

Grey wolves, apex predators, are vital for ecosystem balance. They control herbivore populations and support scavengers. Once ...

Researchers in the Czech Republic are launching a groundbreaking study on the population growth of an invasive species.

A federal judge has run out of patience over an "unreasonable delay'' by the U.S. Fish and Wildlife Service to protect Mount ...

A federal judge has run out of patience over what he said is an "unreasonable delay" by the U.S. Fish and Wildlife Service in ...

The Appalachian Trail spans 2,194 miles across 14 states along the East Coast of the U.S. Most experienced hikers begin their ...

Insect loss is gradual but devastating. Fewer pollinators, smaller harvests, and fragile ecosystems are already appearing.

A federal judge has ordered the Trump administration to make a long-overdue decision on whether to expand critical habitat for Arizona’s highly endangered Mount Graham red squirrels. The squirrels are ...