The red pigments in some fall leaves have proven to be a puzzle for researchers who debate why leaves bother to go red.

We are well into fall, and many trees have shed their leaves. Some, though, have kept their foliage due to a ...

Leaves often turn brilliant colors in autumn. One of those colors has generated a lot of heated debate among scientists in recent years.

This article was originally published by Green Philly and the Philadelphia Citizen as part of a project series for the Philadelphia Journalism Collaborative. "SAVE MY TREE!” That’s what Nicole ...

Colorado State Forest Service entomologist Dan West says the first reports of yellowing aspen leaves started in mid-August. By late last week, as sightings of possible fall foliage continued across ...

Some green dreams for Toledo are turning into more of a brown reality. Trees planted by the city earlier this year are already dying. It looks like autumn in some parts of Toledo, as some trees that ...

When temperatures drop in Miami, so do iguanas — often from significant heights. While overzealous Miamians are breaking out their puffer coats and Uggs, which many do anytime the temperature flirts ...

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 ...