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
Note from the Underground (Buffy comic) Note from the Underground (Buffy comic) "Note from the Underground" is a story arc that was originally published in "Buffy the Vampire Slayer" #47–50 by Dark Horse Comics and based on the "Buffy" television series. It was later reprinted in a trade paperback collected edition. Angel breaks Faith out of jail and the two of them travel to Sunnydale to help control chaos there. Angel, Faith, and Pike continue to look for Buffy, whilst the Slayer battles vampires in Hell. Buffy must continue her journey through Hell, and meets help (Angel, Faith, and Pike). It is up to them to