Gulf oil disaster: Pensacola Beach - 22 photos

Gulf oil disaster: Pensacola Beach - 22 photos

Kevin Reed, 36, of Pensacola breaks down and weeps upon seeing the oil-defiled shores of Pensacola Beach on June 23, 2010. Reed's father taught him to swim in these waters, and Reed just taught his five year old son to swim here. "This will never be the same," he says. "I'd like to take the CEO of BP and jam his face in that pile on the beach."

University of Minnesota researchers clear major hurdle in road to high-efficiency solar cells

University of Minnesota researchers clear major hurdle in road to high-efficiency solar cells

U of M researchers have cleared a major hurdle in the drive to build solar cells with potential efficiencies up to twice as high as current levels.

A team of University of Minnesota-led researchers has cleared a major hurdle in the drive to build solar cells with potential efficiencies up to twice as high as current levels, which rarely exceed 30 percent.

By showing how energy that is now being lost from semiconductors in solar cells can be captured and transferred to electric circuits, the team has opened a new avenue for solar cell researchers seeking to build cheaper, more efficient solar energy devices. The work is published in this week’s Science.

A system built on the research could also slash the cost of manufacturing solar cells by removing the need to process them at very high temperatures.

More @ University of Minnesota

Surface area required to power the whole world by solar power

Ever wondered what is the surface area required to power the whole world by solar power?

This may help put it in perspective for you...

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Wind-Powered Car Travels Downwind Faster Than the Wind | Autopia | Wired.com

Wind-Powered Car Travels Downwind Faster Than the Wind

Rick Cavallaro and his friends have built a wind-powered vehicle that travels downwind faster than the wind, solving a riddle that can start fights.

The unusual wind-powered car hit a top speed 2.86 times faster than the wind during one recent run, a feat that — depending upon your perspective — is either the result of hard work or the same voodoo responsible for Ryan Seacrest’s hair.

The counterintuitive idea that you can travel downwind faster than the wind is casus belli for aerodynamic arguments from internet forums to college classrooms. The concept known as DWFTTW can cause world-renowned physicists to throw their Nobel Prizes in fits of rage.

More @ Wired.com