Fall Sites
Why Do Leaves Change Color in the Fall?
http://photoscience.la.asu.edu/photosyn/education/colorchange.html
Pumpkins and More
http://www.urbanext.uiuc.edu/pumpkins
BrainPop's Autumn Leaves
http://www.brainpop.com/science/ecology/autumnleaves/
Autumn Leaf Scrapbook
http://mbgnet.mobot.org/sets/temp/leaves/index.htm