Since mid-July, I’ve noticed something strange in several maple trees I’ve driven by: their leaves are starting to show fall color! Sometimes it’s just the tips of the branches turning red or yellow; ...

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 ...

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.

Fallen leaves show their autumn colors as they float on a puddle on a rainy morning in Overland Park, Kan. Researchers have yet to agree on why some trees' leaves go to the trouble of turning red ...

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 ...