The U.S. Fish and Wildlife Service is pushing for added protections for the monarch butterfly after suggesting multiple populations could go extinct in mere decades.

Sex gene drives multiple wives for the Mormon butterfly. By Geoffrey Mohan . March 5, 2014 10:20 AM PT . ... In this butterfly, in this one species at least, it is just one gene.

The U.S. Fish and Wildlife Service is pushing for added protections for the monarch butterfly after suggesting multiple populations could go extinct in mere decades.