This is the time of year when Nicole Hughes gets constantly distracted by the fall foliage as she drives around North Carolina. "I'm always looking," says Hughes, a biologist at High Point University.

Autumn is a big time for trees. Many shed their leaves, and of course, before the leaves fall, they can turn brilliant colors. One of those colors has generated a lot of heated debate among scientists ...

When you think of autumn, vibrant images of trees ablaze in red, orange, and yellow likely come to mind. While towering maples and oaks often steal the show, you can bring that same spectacular fall ...

Add Yahoo as a preferred source to see more of our stories on Google. With the fall season nearing, many are anticipating the time when leaves begin to turn shades of red, yellow and orange. In ...

The red pigments in some fall leaves have proven to be a puzzle for researchers who debate why leaves bother to go red. Why do only some leaves turn red in the fall? Scientists can't agree on an ...