Here on Mauna Loa, air is collected on a 40 meter (130 foot) tower (left) and analyzed for CO2 content. At right, a powerful laser beam is used to measure aerosols and particles in the air up to 45 km into the stratosphere.
Similar to the global trend, warmer Southern States have more venomous species than North States. Arizona is the clear winner (or loser) with over 30 species.
The strongest venom occurs in the Mojave and Tiger Rattlesnakes but there are fewer of these bites than other snakes. More bites occur in North Carolina, Arkansas, Texas and Georgia than other states. No, rattlesnakes are venomous, Hollywood and self-proclaimed experts lazily spout information without any research. To be clear, a rattlesnake has to apply it's venmon, not it's poison, hence the difference and distinction.