Penn Archives – The Green Optimistic green tech news, since 2008 Wed, 24 Jun 2015 19:37:41 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 Simple Recycling Method Ends Dirty Mining of Rare Earth Elements https://www.greenoptimistic.com/recycling-rare-earth-elements/ https://www.greenoptimistic.com/recycling-rare-earth-elements/#comments Wed, 24 Jun 2015 19:37:41 +0000 https://www.greenoptimistic.com/?p=55340 Scientists have found a way to recycle rare earth elements used in all electronic devices and electric motors, which could pave the way to a bright future without dirty mining. Rare earth elements (REE) are key components in almost every electronic gadget that people own these days. What is more, these chemical miracles are found within all electric […]

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]]> https://www.greenoptimistic.com/recycling-rare-earth-elements/feed/ 2 55340 Self-Powered Solar Circuit Could Help Computing Become Greener and Faster https://www.greenoptimistic.com/self-powered-solar-circuit-could-help-computing-become-greener-and-faster-20100205/ https://www.greenoptimistic.com/self-powered-solar-circuit-could-help-computing-become-greener-and-faster-20100205/#comments Fri, 05 Feb 2010 19:10:54 +0000 https://www.greenoptimistic.com/?p=6471 A team of scientists at the University of Pennsylvania have developed the world's first circuit powered by solar energy that can power itself, as long as it's left in a beam of sunshine. It could eventually power a new line of consumer devices or even model the human brain.

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