It’s a common belief that most venomous animals live in warmer climates. Or do they? In this episode of “Veritasium,” host Derek Muller debunks the claim after interviewing experts in entomology, zoology, chemistry and science. “There are a greater number of venomous species in warm places, simply because there are more species in warm places,” he says. Muller points to key factors, such as history, the recent ice age and evolution for the phenomenon.