Elephants rarely get cancer thanks to 'zombie gene,' study finds
Less than 5 percent of elephants die from cancer, and researchers may have finally figured out why. According to a study from The University of Chicago, elephants produce "zombie genes" that can help protect the animal from cancer. Here's how it works: Humans and other animals carry one copy of a "master tumor suppressor" gene. Elephants have 20 copies. Scientists found that gene can trigger a "zombie gene" to come back to life with a new purpose: killing cells in damaged DNA.