Every day, you need to make sure to get 4,200 mg of potassium for digestion, to maintain healthy blood pressure, to carry out muscle contractions, and also for proper nerve, kidney, and heart functions.
Over the next decade, the legislation was once again amended to extend these deadlines and to mandate states to revise their implementation plans. Congress did not amend the Clean Air Act during the decade of the 1980s, in part because President Reagan's administration placed economic goals ahead of environmental goals.
Since 1970, the Clean Air Act has reduced key air pollutants that cause smog and particulate pollution by more than 60%. At the same time the economy more than tripled. And Since the Clean Air Act Amendments in 1990, electricity production is up and prices are down. In 2009, electric utilities delivered 33 percent more electricity to U.S. households and businesses than in 1990, while nationwide electricity prices were 10 percent lower.