According to the Environmental Protection Agency, hospitals are leading sources of dioxin and mercury contamination. Most hospitals burn anything contaminated with blood or bodily fluids; and this waste often contains large amounts of plastics made with Poly-vinyl-chloride. When those plastics are burned, they release dioxin, a substance known to cause cancer and suspected of damaging reproductive organs. Hospital equipment containing mercury, a neurotoxin, can sometimes end up in the waste stream, too. Now, a coalition of environmental groups is calling on hospitals to phase out the incineration of medical waste. Living On Earth’s Liz Lempert reports.