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.
Snake species[edit] The United States has about 20 species of venomous snakes which include 16 species of rattlesnakes, 2 species of coral snakes, one species of cottonmouth (or water moccasin), and one species of copperhead. At least one type of venomous snake is found in every state except Alaska and Hawaii.