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 Underground individuals. The Underground Man ridicules the type of enlightened self-interest (egoism, selfishness) that Chernyshevsky proposes as the foundation of Utopian society. The concept of cultural and legislative systems relying on this rational egoism is what the protagonist despises. The Underground embraces this ideal in praxis, and he seems to blame it for his current state of unhappiness. This type of rebellion is critical to later works of Dostoevsky as it is used by adolescents to validate their own existence, uniqueness and independence (see Dostoevsky's "The Adolescent"); rebellion in the face of the dysfunction and disorder of adult experience that one