Part of the magic of living in New England is the stunning display of autumn foliage. But how, exactly, does the shift from greens to crimsons, yellows, burgundies, and oranges take place? And why are we treated to such a display? David Lee, a tropical biologist at Florida International University who has spent his career studying the intricacies of color in plants, will explain some of the biological processes that take place within a deciduous plant come fall and also the signals to humans and animals that are communicated through plant pigments. The Tuesday, October 25 class will begin at 7 p at Weld Hill, 1300 Centre Street in Boston, and is sponsored by the Arnold Arboretum. Register at http://www.arboretum.harvard.edu. Fee: Free for Arboretum members; $15 nonmembers.
