MINNEAPOLIS — The latest map shows fall colors are just starting to emerge across parts of northern and southern Minnesota. That means it's only a matter of time before the leaves drop. You may think ...

Behind every autumn leaf lies a chemical shift-chlorophyll fading, carotenoids glowing, anthocyanins rising-that turns survival into spectacle. Every autumn, landscapes across much of the world ...

Millions of people every year make it a goal every fall to witness the beautiful changing of leaves. Timing is key, as see peak season is when trees are at their maximum brightness. It’s a challenging ...

The arrival of autumn brings about longer and cooler nights. These changes send a signal to the leaves in trees to stop producing chlorophyll, the compound that makes them green. The loss of ...

Andrew Richardson, an ecologist at Northern Arizona University, maintains a camera at Hart Prairie, about 8,000 feet above sea level on the west side of the San Francisco Peaks near Flagstaff. While ...

It’s officially fall in the northern hemisphere, but depending where you are, it might not look like it. From Maine and Vermont to New York, tourists often flock to the U.S. East Coast to see the ...