Geothermal energy in the United States Geothermal Data System (NGDS). Through the NGDS, many older paper archives and drill logs that are stored at state geological surveys are now being digitized and made available for free to the public. The underground hot water and steam used to generate geothermal power may contain chemicals that could pollute the air and water if released at the surface. Hydrogen sulfide, which is toxic in high concentrations, is sometimes found in geothermal systems. Newer methods of generating geothermal power separate the hot steam collected underground from the steam used to power turbines, and substantially reduce the risk of releasing air-polluting
Hot Rocks 1964–1971 Hot Rocks 1964–1971 Hot Rocks 1964–1971 is a compilation album by the Rolling Stones released by London Records in December 1971. It became the Rolling Stones' best-selling release of their career and an enduring and popular retrospective. While the album carries most of the band's biggest hits during their first decade, it does drop a few of them to include standout album tracks such as "Play With Fire", "Under My Thumb" and "Gimme Shelter" giving listeners a more well-rounded impression of the Rolling Stones' music in this era. "Hot Rocks 1964–1971" peaked at No. 4 on the Billboard 200 album