Shocking statistics show that Monarch butterfly populations in the U.S. have fallen roughly 90 percent since 1995. In response, a new petition is asking the U.S. Fish and Wildlife Service to protect the butterflies under the Endangered Species Act. The petitioners cite a loss of 165 million acres of the monarchs’ habitat and the loss of their chief food source, milkweed, due to herbicide-resistant farming practices (yes, Monsanto, we’re talking about you again) as the primary reasons for the dramatic decline of this iconic and formerly common species.