Mormon crickets have been swarming in Nevada and now they’re causing a traffic problem. It turns out that all the crickets being run over and crushed by cars is creating a sludge. Last week the sludge caused a multi-vehicle pileup. Mix that with rain and the roads are slick like ice. The cricket swarms have also closed schools thanks to taking over some buildings. The Agriculture Department is warning residents to be careful when the creatures gather.