Pollution concentrates in the food we eat by Biomagnification. Increasingly, natural ingredients such as Citric Acid are discovered that clean up pollution, among them hard working weeds and trees, Cleansing Plants, which break down pollution in the soil and the air around them as they grow. Corn Waste as a filter removes heavy metals and weed killer residue. Hair soaks up oil spills. Soil can be analyzed for its safety with Lead Detection methods used by the EPA. Microbes remove heavy metals and radioactive elements from industrial sludge. Charcoal can absorbs Lead and Mercury, Algae can clear up methane pollutants, and UV or Super Heated Water can break down PCB's, per Japanese research.