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 ...

This animated map shows fall leaf color projections. Red indicates peak color. It’s officially fall in the Northern Hemisphere, which means bright, beautiful foliage isn’t far behind. Parts of the U.S ...

What is the purpose of fall foliage color? As humans, most of us look at the world through rose-colored glasses — maybe as gardeners it’s green-colored glasses. And that shading sometimes leads us to ...

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 ...