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
Friends of the Earth Australia Friends of the Earth Australia Friends of the Earth (FoE) Australia is a federation of independent local groups working for a socially equitable and environmentally sustainable future. It believes that pursuing environmental protection is inseparable from broader social concerns, and as a result uses an environmental justice perspective in its campaigning. It was founded in 1974 and is the Australian member of Friends of the Earth International. Friends of the Earth considers environmental issues in their social, political and human rights contexts. Their campaigns stretch beyond the traditional arena of the conservation movement and seek to address the economic, social