A mountain lion was spotted lounging in a tree in a Thousand Oaks neighborhood Thursday. Photos and video of the sighting, ...

A global study shows treelines are not just moving upward. Climate, human activity, and fires shape where trees grow.

Add Yahoo as a preferred source to see more of our stories on Google. John Poltrack / Getty Images There’s a lot to love about mountain ash, a delightful native tree that fits easily into urban and ...

California officials “urge the public to stay away and allow the kitten a chance to reunite with its mother” Getty A baby mountain lion was spotted on a tree branch in the backyard of someone’s home ...

The Cheyenne Mountain Zoo welcomed a rare and endangered tree kangaroo to the zoo family Tuesday night. Som, a 3-year-old female Matschie's tree kangaroo, arrived at the zoo after traveling from ...

Deck the Trees is in full swing for another year. Trees depicting this year’s theme, “Let Heaven and Nature Sing,” went up at the Monte Vista Hotel and around town the week after Thanksgiving. The ...

In the high-elevation slopes of the northern Rocky Mountains and the Pacific Northwest, the whitebark pine (WBP) tree has been standing strong. For years, everything was perfect. Everything proceeded ...