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.

Leaves often turn brilliant colors in autumn. One of those colors has generated a lot of heated debate among scientists in recent years. Autumn is a big time for trees. Many shed their leaves, and of ...

The autumn equinox is about three weeks away, and that means it's almost time for the trees to turn a myriad of red, orange and gold in Northern Nevada. But when will it be the peak time to see Reno's ...