The Bombardier Beetle And Its Crazy Chemical Cannon, Deep Look

When attacked, this beetle sets off a rapid chemical reaction inside its body, sending predators scrambling. This amazing chemical defense has some people scratching their heads: How could such a complex system evolve graduallywithout killing the beetle too SUBSCRIBE to Deep Look DEEP LOOK: a new ultraHD (4K) short video series created by KQED San Francisco and presented by PBS Digital Studios. See the unseen at the very edge of our visible world. Get a new perspective on our plac