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 Litany of Earth The Litany of Earth The Litany of Earth is a 2014 fantasy/horror fiction novella by Ruthanna Emrys, revisiting H.P. Lovecraft's story "The Shadow Over Innsmouth". It was first published on Tor.com. Decades after the residents of Innsmouth were forced into internment camps by the United States government, Aphra Marsh discovers humans trying to replicate her people's secret mystical rituals. "Litany of Earth" was included on "Locus Magazine"s recommended reading list for 2014. Charlie Jane Anders stated that the story was "something special". An analysis by Io9 indicated that, if not for the involvement of the Sad Puppies, "Litany of Earth"