The Environmental Working Group (EWG) conducted air pollution testing that revealed that cleaning supplies used in 13 key California school districts can cloud classroom air with more than 450 distinct toxic contaminants, including chemical agents linked to asthma and cancer. The 13 school districts included in the study were chosen for their geographic diversity and diversity of size. Several districts have already begun moving to green cleaners, while others have pilot programs underway at various stages. Most of the 450 chemicals identified have never been assessed for safety; six are identified with increasing the risk asthma, and eleven are known, probable or possible human carcinogens. To read more about this report, visit: http://www.ewg.org/schoolcleaningsupplies/pressrelease.