Acid Rain
Acid rain results when sulfur and nitrogen, elements released by cars, trucks, lawnmowers, factories, power plants, and other sources, are dissolved in water droplets and fall to the ground. Rain water tends to be most acidic in the northeastern U.S., and can have negative effects on our natural and built environments. For example, the US EPA estimates that up to 40 percent of nitrogen entering coastal waters along the Atlantic and Gulf coasts comes from the atmosphere. Too much nitrogen in these waters can lead to harmful overgrowth of algae and other “nuisance” plants. Acid rain can also damage buildings and monuments.
Viewer Tip: There are many ways individuals can help to reduce the sources of acid rain. Saving energy by turning off appliances when they’re not in use and choosing energy-efficient appliances can help to reduce our demand for energy. You can also reduce mobile sulfur and nitrogen emissions by driving less – carpool, take the bus or subway, walk, or bike to your destination whenever you can.
Seasons: Spring, Summer, Fall, Winter
(Sources: US EPA, Region 1. “Acid Rain in New England: Causes of Acid Rain;” US EPA, “Reducing Acid Rain.” http://www.epa.gov/airmarkets/acidrain/reducing/)