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
Notes from the Underground (creative writing paper) Sutherland agreed with James that 'everything in the paper is worth reading' but felt the newspaper was pitched too highly compared to other free newspapers. 'It might work, but I think the title is an allusion to the Dostoevsky book Notes from Underground which I suspect would probably go over the heads of most commuters.' However he did add that 'this is a very good platform for new literature, and I am all in favour of it. More power to it, I say.' Notes from the Underground (creative writing paper) Notes from the Underground is a creative writing free newspaper.