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 turned ...

it's more likely than not that your soil pH is in the acidic range (less than 7 on the pH scale). Soil acidification can occur based on a variety of factors, including plant decay, rainfall ...

The spill happened on Feb. 18 when a tailings dam that holds acidic waste from a copper mine in the north of the country collapsed, according to investigators from the Engineering Institution of ...