I n an extraordinary discovery, melting ice on the Beartooth Plateau in the Rocky Mountains has revealed an ancient, pristine forest frozen in time. Encased for thousands of years, this forest of ...

The number of monarch butterflies wintering in the mountains west of Mexico City, rebounded this year, doubling the area they ...

One person is dead after a Saturday evening avalanche swept over part of the Rocky Mountains near Berthoud Pass in northern Colorado’s Grand County, sheriff’s officials said. A snowboarder ...