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.
They help control insect and rodent populations. Alabama is home to six venomous snakes. The Eastern Coral Snake, Copperhead, Cottonmouth, Eastern Diamondback, Timber Rattlesnake and Pygmy Rattlesnake. the eastern coral snake packs the most potent venom of all. These half dozen are snakes to be avoided, although there are other snakes that will cause a nasty, painful bite.