What’s the use of doom and gloom if an asteroid takes us out anyway? But, really, it might just be gene-editing that get us in the end, if we’re being honest. Journalist Bryan Walsh joins Krys Boyd to talk about the many probabilities of world-ending catastrophic events, reported with humor and backed up by hard science. His book is, “End Times: A Brief Guide to the End of the World. Asteroids, Supervolcanoes, Rogue Robots, and More.”