Columbia University Archives – The Green Optimistic green tech news, since 2008 Tue, 30 Jun 2015 08:25:31 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 Evaporation as New Source of Renewable Energy https://www.greenoptimistic.com/evaporation-bacteria-energy/ https://www.greenoptimistic.com/evaporation-bacteria-energy/#respond Mon, 29 Jun 2015 20:17:36 +0000 https://www.greenoptimistic.com/?p=55397 Evaporation is now becoming a source of renewable energy with the help of bacteria and the two new devices, Evaporation engine, and Moisture mill, invented by the Columbia University scientists. While solar, wind, hydro, geothermal, tidal, bio-energies are widely known, there are also other sources which are, now, less reliable as both research and technology in those […]

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]]> https://www.greenoptimistic.com/evaporation-bacteria-energy/feed/ 0 55397 New Self-Powered Video Camera Can Work Indefinitely https://www.greenoptimistic.com/self-powered-video-camera/ https://www.greenoptimistic.com/self-powered-video-camera/#respond Mon, 20 Apr 2015 08:34:49 +0000 https://www.greenoptimistic.com/?p=54368 World’s first self-powered video camera, which can convert the incident light from its object into its input power, was invented by a computer scientist, Shree K. Nayar at Columbia University. The scientists took advantage of the capability of a pixel photodiode to operate both in photoconductive and photovoltaic modes. It works in photoconductive mode while recording […]

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]]> https://www.greenoptimistic.com/self-powered-video-camera/feed/ 0 54368 Incredible Synthetic Tree for CO2 Sequestration https://www.greenoptimistic.com/incredible-synthetic-tree-for-co2-sequestration-20090628/ https://www.greenoptimistic.com/incredible-synthetic-tree-for-co2-sequestration-20090628/#comments Sun, 28 Jun 2009 19:55:19 +0000 https://www.greenoptimistic.com/?p=3843 Columbia University has announced the development of a structure that could capture carbon 1,000 times faster than a real tree. Klaus Lackner said, as the "tree" could be used for capturing carbon which has been already emitted into the air by car gasoline or airplain fuel.

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