Bananas are sometimes called a perfect food for their nutritional wallop and easy packaging. But the banana lands are a source of heartbreaking stories about disease, violence, and social upheaval. Jason Glaser will share details in his program. (Photo courtesy guardian.co.uk)- Greg Cushman will focus on the Rapanui, notorious for their destructive treatment of the environment of Easter Island, and their elaborate ecological understanding of and adaptation to their isolated home and its difficult environment.