Researchers have pinpointed a possible cause of colony collapse disorder or CCD—aka, that thing that’s killing off all the honey bees. Neither cell phone towers, nor GM crops, nor Doctor Who aliens, the disorder seems to be the work of a virus and a fungus working together to first get the bees lost, and then slowly kill them far from their hives. Nobody knows yet which attacks first, or how, exactly, the virus and fungus build on one another to create colony collapse. But the combination was found in autopsies (yes, bee autopsies) done on victims of CCD, and not found in living or dead bees that weren’t affected by the disorder. Disclaimer: This could still turn out to be an incorrect theory, and we’re far from knowing how to stop or prevent the one-two punch.