Monsanto starving butterflies   Monsanto sells a pesticide which kills milkweed the only food source for the larvae of Monarch butterflies  httpeyaleedufeaturetrackingthecausesofsharpdeclineofthemonarchbutterfly Roundupready crops killing habitat of monarch butterflies Twoway Monarch Migration Map  Monarch Watch Blog In Midwest Monarch Butterflies Flutters May Be Far Fewer  NYTimescom httpwwwflightofthebutterfliescomconservationpreservation The Monarch Butterfly Decline and What You Can Do About It  Cool Green Science httpinsectsaboutcombmonsantomilkweedandthedecliningmonarchmigrationhtm