Sounding the Alarm for Leaf-Peepers

Tree species are being affected by global warming, and that in turn is hurting the fall foliage in the Northeast, says Hamilton College Professor of Biology Ernest H. Williams, Jr. Warmer climates are causing a decline in the sugar maples and red maples that are responsible for most of the magnificent oranges and reds, says Williams, who is the author of The Nature Handbook: A Guide to Observing the Great Outdoors.