Fires caused by carelessness pose a grave risk of death. Between one and two million Americans need medical attention for burn injuries every year. Many hazards can cause fatal burn injuries. In an industrial setting, hot or molten liquids are often the most frequent culprit. In the home setting, frayed or defective electrical wiring, defective electrical appliances water heaters, furnaces or natural gas leaks may cause fires or explosions that take the live of home occupants.