The Reasons Behind the Fall Colors Randall Weiseman September 7, 2012 Ag "Outdoors", Forestry Paul Schaberg with the US Forest Service says the triggers of fall color are actually two-fold. Download Audio Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to print (Opens in new window)Click to email a link to a friend (Opens in new window)MoreClick to share on Tumblr (Opens in new window)Click to share on Pocket (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Reddit (Opens in new window) Related