A ‘Deep Look’ at the Bombardier Beetle

Our friends at member station KQED in San Franciso are back with a new installment of Deep Look, an ultra-high defintion video series that “explores big scientific mysteries by going incredibly small”. In this latest episode, the bombardier beetle, which unleashes an explosive chemical reaction inside its body when attacked. This amazing chemical defense has some people scratching their heads: How could such a complex and hazardous system evolve gradually—without killing the beetle too?