Why do some leaves turn yellow in autumn, while others turn red? • Leaves contain various coloured pigments. The pigments carotene (orange), xanthophyll (yellow) and chlorophyll (green) are found in ...

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 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.

Yellow leaves can be an ambiguous symptom in plants. Like a fever in humans, yellowing leaves often indicate a health problem, but there are so many causes that the symptom doesn't indicate exactly ...

GRAND RAPIDS, Mich. (WOOD) — What makes some leaves change red in the autumn while others finish a golden yellow or orange? It is all to do with the chemical composition hiding inside each leaf. Let’s ...

Over the next two or three weeks, fall leaf color should be at its prime in Georgia’s mountains. Leaf watchers by the thousands will be hitting mountain highways, trails and overlooks for a peep at ...

Autumn officially began last Sunday, although the true harbinger of autumn — those ubiquitous pumpkin-flavored drinks and treats — began appearing at my morning coffee stop nearly a month ago! Autumn ...

I recently answered a question in my advice column on some azaleas with leaves turning color. A significant percentage of the leaves had turned orange, and the gardener was concerned that something ...