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.

Leaves also contain carotenoids, which produce yellow, orange and brown colors. In the autumn, they begin to produce more anthocyanin, which gives them red and purple hues.

Albert Camus once said, "Autumn is a second spring when every leaf is a flower." It's easy to agree with such a sentiment if you've ever taken a scenic autumn drive in New England or the Rockies ...

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 ...

The color of leaves is regulated based on the length of nights as the months go by. The duration of autumn nights is the primary reason for the pigment change, and less from other factors like ...

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 ...

Frederic Edwin Church, “Autumn Woods,” ca. 1870, Cooper Hewitt, Smithsonian Design Museum, gift of Louis P. Church Autumnal leaves in vibrant hues are a beautiful part of the season, but those leaves ...

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 ...