The content its not just about batteries scroll down and see what treasures you can discover background we think of a battery today as a source of portable power but it is no exaggeration to say that the battery is one of the most important inventions in the history of mankind.
The story of the discovery of the neutron and its properties is central to the extraordinary developments in atomic physics that occurred in the first half of the 20th century leading ultimately to the atomic bomb in 1945.
woolly mammoths suited for cold by philip r burns medvedaccessdigexnet ted holden writes again the basic misunderstanding as i see it the question regarding mammoths in the liakhovs novosibirsk etc is not whether the handful of preserved specimens we find were frozen petrified mummified are in suspended.
What is phet founded in 2002 by nobel laureate carl wieman the phet interactive simulations project at the university of colorado boulder creates free interactive math and science simulations.
All thats especially true if we can build hoyts cislunar tether system powered by the difference in gravitational potential between the lunar surface and the earth so movign materials from the moon to earth is actually moving it downhill and you can exploit that through clever use of momentum exchange tethers.
The basic requirements for life support are breathing mix an atmosphere to breath or the crew will rapidly suffocate oxygen must be added as it is consumed and carbon dioxide removed as it is exhaled humidity must be maintained at a confortable level.
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half of the worlds wetlands were lost last century logging and conversion have shrunk the worlds forests by as much as half some 9 percent of the worlds tree species are at risk of extinction tropical deforestation may exceed 130000 square kilometers per year.