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.
Also see our Venomous Snakes of Southeast Texas poster-great for classrooms, scout groups, and anyone who loves the outdoors. *Note: Although there are only 4 species of venomous snakes in Texas, there are several subspecies of these snakes (10 rattlesnakes, 1 cottonmouth, 3 copperheads, 1 coral snake).