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
The Winds of Darkover The Winds of Darkover The Winds of Darkover is a science fantasy novel by American writer Marion Zimmer Bradley, part of her Darkover series. It was first published by Ace Books in 1970, as an Ace Double bound tête-bêche with "The Anything Tree" by John Rackham. This is the first Darkover novel to include references to the Sharra Matrix. In terms of the Darkover timeline, Bradley states in "Author's Notes on Chronology" that "The Winds of Darkover" occurs about four years after the events in "Star of Danger". One the underlying themes of "The Winds of Darkover" is rape. Bradley