Water purification unit generates its own energy

"A new biological water purification facility developed by Siemens generates enough methane gas to power its own operations. It also produces much less sludge than conventional systems. The pilot facility for this process, which is located at a site run by Singapore’s Public Utilities Board, has been operating in an energy- neutral manner since June 2010. Now, the city state is building a much larger pilot facility – one that will process 300 times more effluent than its predecessor, or about as much sewage water as is produced by around 1,000 people. "

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MIT researchers are printing solar cells on sheets of paper

Solar power is a great alternative energy source, but it’s unfortunately a rather expensive one. However, researchers at MIT are working on a new and less-expensive way to make solar cells which involves printing them directly on to fabric or paper."

More @ Geek.com

Bringing light to the poor, one liter at a time | Video | Reuters.com

A bottled liter of water with a few teaspoons of bleach is proving to be a successful recipe for dwellers in the light-deprived slums of the Philippines. The simple technology is spreading sunlight in places where it has never been, and saving residents money at the same time.



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