Paul Andersen explains how organisms are able to regulate their internal body temperature (or not). He starts with a brief description conduction, convection, radiation and metabolism. He contrasts ectotherms and endotherms. He also explains how endotherms use negative feedback loops to regulate internal body temperature. Intro Music Atribution Title: I4dsong_loop_main.wav Artist: CosmicD Link to sound: www.freesound.org/people/CosmicD/sounds/72556/ Creative Commons Atribution License