In 1990, the Clean Air Act was updated by Congress to eliminate acid rain by reducing power plant pollution. Unfortunately, ...

Sulfur is rarely found pure in the ground. It is an impurity which is removed from fossil fuels because it causes acid rain when fossil fuels are burned.

In the 1970s, acid rain was one of the most serious environmental threats in North America and Europe. The air was so laden with pollution from coal power plants and cars at the time that it ...