Study finds good reasons to go after your comrades—and some bad ones, too Jay Rosenheim had no clue his team's strategy to defend California's cotton crops would spark a cannibalism epidemic. Faced with the ever-destructive cotton aphids—a tiny ravenous green insect that sucks sap from crops, leaving moldy waste and a slew of deadly viruses in their wake—he and his … [Read more...] about What Causes Certain Animals to Become Cannibalistic?