Why are leaves falling off the trees already?To play this video you need to enable JavaScript in your browser.This video can not be playedWhy are leaves falling off the trees already?CloseMore on this story.SubsectionClimatePublished2 SeptemberShareclose panelShare pageCopy linkAbout sharingRelated topicsClimateFollow Climateclose panelYou are now following ClimateUpdates from your News topics will appear in My News and in a collection on the News homepage.Read description