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Hydropower (from Ancient Greek ὑδρο-, "water"), also known as water power or water energy, is the use of falling or fast-running water to produce electricity or to power machines. This is achieved by converting the gravitational potential or kinetic energy of a water source to produce power. [1] Hydropower is a method of sustainable energy ...
This category is for articles on books for children and young adults written or published in 1970. ... 1980s; 1990s; 2000s; 2010s; ... The Forgotten World of Uloc;
Reflex 4 volumes for children age 10 and older. 1968–1971. A regular inventory in many Swedish class rooms during the 1970's. [7] The new Bonniers Lexikon 24 volumes, 1993–1998. Nationalencyklopedin or NE 20 volumes, 1989–1996. DVD versions in 1996 and 2000. Online today.
The End of Oil: On the Edge of a Perilous New World: Paul Roberts (author) 2004: Energy: ISBN 978-0-618-23977-1: Endemic Bird Areas of the World: Priorities for Biodiversity Conservation: Alison J. Stattersfield, Michael J. Crosby, Adrian J. Long, and David C. Wege: 1998: Wildlife conservation: ISBN 0-946888-33-7: Endgame (two volumes) Derrick ...
The crisis began to unfold as petroleum production in the United States and some other parts of the world peaked in the late 1960s and early 1970s. [3] World oil production per capita began a long-term decline after 1979. [4] The oil crises prompted the first shift towards energy-saving (in particular, fossil fuel-saving) technologies. [5]
1980s; 1990s; 2000s; 2010s; 2020s; 2030s; Pages in category "1980 children's books" The following 42 pages are in this category, out of 42 total. ... Category: 1980 ...
The Childcraft series was originally created in 1934 by W. F. Quarrie & Company, then publishers of the World Book encyclopedia. The series' title was Childcraft – The How and Why Library. Childcraft was created as a sort of encyclopedia for young children.
The Changes is a British children's science fiction television serial filmed in 1974 and first broadcast in 1975 by the BBC.It was directed by John Prowse and is based on the trilogy written by Peter Dickinson: The Weathermonger (1968), Heartsease (1969), and The Devil's Children (1970) (the books were written in reverse order: the events of The Devil's Children happen first, Heartsease second ...