21 Free Lessons on this Very Important Day
Creative Commons: http://www.flickr.com/photos/wwworks/2222523978/in/photostream/
From ESL Holiday Lessons.com
(14-page handouts, online quizzes and mp3 listenings)
From Breaking News English.com
(13-page worksheets, 8 online quizzes and mp3 listenings)
Loss of Nature Will Damage Economies
Hawaii Hit by Great Plastic Garbage Patch
From ESL Discussions.com
(20 questions as downloadable handouts)
From Famous People Lessons.com
(13-page handouts, listenings and online quizzes on 3 environmentalists)
From Listen A Minute.com
(9-page handouts, quizzes and 60-second listenings)
Please let me know how your lessons went via the comments 
