Acid rain is caused by the burning of fossil fuels, especially from vehicles and factories, and has devastating consequences.

Acid rain and metals from power plants, vehicles and industries reached remote mountain lakes for years. Evidence from those ...

After an air-quality agreement Canada signed in the 1990s, P.E.I.'s precipitation no longer falls into the range of acid rain ...

Explore the impact of acid rain and how it was addressed. Discover the successful story behind combating this environmental ...

When the gases produced for electricity or by cars combines with the oxygen and water already in the air, it forms what is known as acid rain — or rain with a pH between 4.2 and 4.4.

Normal rain falls at 5.6 on the pH scale. Acid rain, however, usually falls between 4.2 and 4.4. Any type of precipitation that has more acid in than usual is typically classified as acid rain.