FACT FACT Underground storage tanks hold many toxic materials and often leak due to age and burial in damp soil. They must be removed and contaminated soil cleaned up to stop pollution. There are about 1.4 million underground stroage tanks used in the United States. FACT FACT Wind power is an important alternative source of energy. Wind turbines can now be installed at costs that are competitive with some conventional electrical power plants.
Storm sewers carry runoff from miles of city streets and rooftops into waterways.
Urban storm runoff is seldem treated. Almost half of the energy used in the home is spent on heating. Propoer insulation of homes, along with energy efficient window, lighting and furnance, water heaters, and appliances can greatly reduce energy consumption. He is most noted for his writings and works on California. Muir's writings helped preserve the Yosemite Valley as a national park.