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

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

Even though temperatures around Iowa remain in the high 70s and mid-80s, it is still officially fall time. With a 60-degree start to the second week of October, the leaves on trees should start to ...

The start of autumn has felt a little different this year. The temperatures are warm. Very little rainfall. Lots of green leaves on the trees. It could be awhile before the rain and temperatures ...