Tag Archives: membrane

Clean water: A self-cleaning filter

News: Water Shortage    April 9, 2010
Anybody who’s ever filtered water knows that the filters get dirty. Supposedly clean water comes out one side, but the other side gets coated by whatever was in the water – dirt, bacteria, algae. Sooner rather than later the filter needs to be cleaned or changed. Commercial or public filtering of water isn’t much different, [...]
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Is it goodbye to “Primordial soup?”

Impact: Origin of Life    February 3, 2010
Over the years how many times have you encountered the term ‘primordial soup’ to explain the ferment in which life originated on Earth? The idea of a kind of organic broth in Earth’s early waters, struck by lightning, ultraviolet light, or some other catalyst, and producing slowly but surely the various compounds that eventually take [...]
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