Scientists have found that a single tree can be home to a trillion microbial cells — an invisible ecosystem that is only ...

The Capitol Christmas Tree, also known as the People’s Tree, is coming from Nevada for the first time ever this year. Here’s how Nevadans can help decorate it.

It's a tree-lighting tradition dating back to the 1930s and this year's tree will arrive in New York City on Nov. 11. The Norway spruce is 80 to 85 years old, weighs 12 tons and is about 80 feet tall.