Whether the topic is popcorn or particle physics, you can count on BrainStuff to explore -- and explain -- the everyday science in the world around us.

How Catalytic Convertors Work

August 11, 20082 min
Catalytic convertors convert hydrocarbons, carbon monoxide, and nitrogen oxides into three harmless chemicals, making the exhaust of a vehicle much cleaner.Learn more about advertising on the HowStuffWorks podcasts at to learn about your ad choices when listening to podcasts, visit