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Some chemical compounds, like copper sulfate, are allowed to help control plant diseases, but need to be used in a way that minimizes their accumulation on soil and avoids leaving residues on crops.

Your body also produces about 700 milligrams of sulfites daily as you metabolize the protein in your food and excrete it as sulfate.

Then in 2012, rogue businessman Russ George took a ship off the Pacific coast of British Columbia and dumped some 100 tons of iron sulfate into the water.

The researchers note that the only way to prevent additional wildfires when cleaning up reflective sulfate air pollution is to simultaneously reduce emissions of greenhouse gases like carbon dioxide and methane.

Because aerosol particles like sulfate and their precursors like sulfur dioxide reflect sunlight and help make clouds brighter, removing them means more of the sun's heat hits the ground.