Marine current power the rotation of the earth. The sun acts as the primary driving force, causing winds and temperature differences. Because there are only small fluctuations in current speed and stream location with minimal changes in direction, ocean currents may be suitable locations for deploying energy extraction devices such as turbines. Other effects such as regional differences in temperature and salinity and the Coriolis effect due to the rotation of the earth are also major influences. The kinetic energy of marine currents can be converted in much the same way that a wind turbine extracts energy from the wind, using various types
A Friend of the Earth A Friend of the Earth A Friend of the Earth is a 2000 novel by T. Coraghessan Boyle. The novel is a story of environmental destruction set in 2025; as a result of global warming and the greenhouse effect, the climate has drastically changed, and, accordingly, biodiversity is a thing of the past. Due to habitat loss, many animal species have become extinct, but the flora has also considerably suffered. Many foods, including beef, eggs, beer, etc., are no longer readily available. Instead, rice is grown everywhere, and sake is the only alcoholic beverage available. Other vegetables are grown in