The red pigments in some fall leaves have proven to be a puzzle for researchers who debate why leaves bother to go red.

Chlorophyll breaks down, revealing the yellow pigment that was there all along. But red? Red is a different story altogether.

As the outside world normally is around this time each November, things have changed a lot. Many trees are already devoid of leaves while others are still covered with colorful ones. When the ...

Smokymountains.com has provided those wanting to see this change in the leaves with a map predicting what U.S. foliage will look like.

Over my life I’ve delighted in the annual pageantry of autumn, watching the green leaves of ... What I’d heard and believed ...

While many see fallen leaves as a chore, they can actually be beneficial for the landscape. Here's how they can help.