The US Environmental Protection Agengy (EPA) is currently issuing a new proposal to cut mercury emissions by more than half as well as other pollutants from boilers, process heaters, and solid waste incinerators. Toxic air emissions have been shown to cause cancer and other serious health problems for affected people. The main purpose of this proposal would be to reduce health and environmental risk in a cost-effective way. The EPA estimates that the new rules would yield more than $5 in health savings for every dollar spent in implementing the rules.