fracking
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Scientists find a way to make fracking less horrible for the environment
Using fracking (hydraulic fracturing) to get oil or gas may fulfill energy needs, but it has a nasty impact on the environment. Among other things, it leaves behind extremely salty water. However, scientists at both MIT and the King Fahd University of Petroleum and Minerals have found technology that could soften the blow. Their approach filters output water through multiple stages of electrodialysis, which uses electrical charges to pull salt through a membrane. This wouldn't make the water drinkable, but it would be reusable -- and that, in turn, would reduce or even eliminate the need for fresh water beyond an initial supply. Oil and gas wells wouldn't deprive local communities of nearly as much drinking or farming water, and they wouldn't have to dispose of quite so many contaminated liquids.
Inhabitat's Week in Green: rise of solar power, cardboard forts and a Death Star ping pong ball
Each week our friends at Inhabitat recap the week's most interesting green developments and clean tech news for us -- it's the Week in Green. It was a big week for superlatives in clean tech and green architecture -- particularly in Europe. First, construction on The Shard, architect Renzo Piano's shimmering, 72-story skyscraper, wrapped up in London, making it the tallest building in Europe. A nighttime celebration, complete with a laser light show accompanied by the London Philharmonic Orchestra was held. Just about a mile down the river, construction is moving forward on Blackfriars Station, the world's largest solar bridge. The historic bridge is being fitted with a solar array that will produce 900,000 kWh of clean electricity per year. And in Germany, solar producers have set a new world record, pumping an astounding 14.7 TWh of electricity into the grid during the first six months of 2012 -- 4.5 percent of the country's total power production during that period.
