Environmental Hazards Can be Eliminated: Unleaded Gasoline
about 1986, laws were fully implemented to phase out the use of lead
Benefits occurred quickly. One study shows that US blood-lead
levels declined by 78 percent from 1978 to 1991. Today, the European
Union has banned the use of lead in gasoline and the World Bank has urged all
countries to do so.
here for a quick overview of the history of lead use in gasoline.
Species Can Be Saved
In an earlier lesson, we talked about how conservation efforts seem to have saved the American Bald Eagle and the Whooping Crane from extinction. There are other modern-day examples of preserving species.