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 ...

As days become shorter and cooler trees stop producing chlorophyll, the green pigment they use for producing nutrients. If you remember grade-school science, this process is known as photosynthesis.

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 ...

Landscape trees fulfill many functions, including seasonal color in the form of blossoms or autumn foliage. Some trees provide food (fruit or nuts) for humans and wildlife, while others offer ...

Few experiences capture the magic of autumn quite like a scenic fall-foliage drive along the East Coast. From the fiery red ...

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.