Chemistry
The Role of Catalytic Converters in Reducing Automobile Exhaust Emissions
Quick fact
A single catalytic converter can convert over 90% of carbon monoxide, hydrocarbons, and nitrogen oxides into carbon dioxide, water, and nitrogen—preventing millions of tons of pollutants from entering the atmosphere each year.
Why this is interesting
Every time you drive a modern car, a small brick of precious metals is silently turning poisonous gases into harmless ones. But how does it actually work?