Scary movies have nothing on nature itself. Eons of evolution have created plenty of nightmare scenarios with no screenwriter in sight. For example, the Atlas Obscura archives are full of tales of the undead all around us—bees that dig their own graves, caterpillars that explode, shrimp controlled by parasites—and scientists’ efforts to explain these totally real zombies. Here are a few of our favorites, along with our picks for refuge when Hollywood’s more familiar brain-eating monsters shamble to life. The Race to Cultivate China’s Beloved ‘Zombie Mushroom’ by Isobel Whitcomb…