The cool, crisp air of autumn is on its way. Here's what to know for the fall leaf-peeping season in Colorado.

Deciduous trees have unique autumn leaf colors that are specific to every species. Fall's most common leaf colors are red, yellow, and orange.

Red maple tree with leaves turning red in fall. Photo by: Lenny Farlee The calendar flipping over to October is a reminder the annual Autumn leaf color display is on its way. The perennial question is ...

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 ...

Stress How Autumn Leaves Color Our Inner Lives Appreciating autumn’s changing leaves may change us for the better. Posted September 29, 2015 | Reviewed by Jessica Schrader ...

With Utah’s drier summer, this year’s colors may not appear as bright as in earlier years. The shortened day length is the internal trigger that causes leaves to change color.

You've seen the leaves changing for a few weeks, and past this point, you'll see more of them fade and fall. So let's investigate the three factors that influence autumn leaf color.

The first day of fall was Sept. 22, and autumn leaves will soon change color. In an ideal season, the Northeast and New England will be awash in brilliant yellows, oranges and reds.

How they change, and how vivid their show of autumn leaf color will be this year, doesn’t just depend on cool days in September, according to Ed Hedborn, manager of plant records at The Morton ...

When summer gives way to autumn, temperatures drop, the amount of daylight shortens and the amount and intensity of sunlight decreases. As a result, chlorophyll in the leaves breaks down, draining ...