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.

The forests of Indiana are a glory this time of year. Lumbering catalpa trees growing above Indianapolis homes are starting to fade into gold and the forests of Brown County have fallen into a vibrant ...

If your tree is already turning its leaves for the fall, it's probably not the seasons, it's stress. The first day of fall isn't until Sept. 22, but some trees are already starting to show off their ...

Why do some trees not lose their leaves in winter? And why do leaves sometimes not change color in fall? Get expert answers.

Scientists know why leaves turn yellow in the fall: Chlorophyll breaks down, revealing the yellow pigment that was there all along. But red? Red... Fall foliage is still a mystery: Why do some leaves ...

Michigan's parks and backroads fill up each fall with people looking for the most spectacular leaf colors. If you're considering a scenic drive, now may be the time to plan; fall colors aren't far ...

One thing that makes living in South Carolina as sweet as a cup of tea is being able to experience the four seasons. Although the summers may be brutal, residents can always look forward to a cool ...

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 ...