Funny thought experiment on how to turn a parked car into a solar twin panel by increasing, step by step, the amount of solar energy that it will collect. Barry’s non-technical explanation of why DIY solar water heating can save energy is easy. If you want more techy stuff about solartwin solar panels, this is also on youtube. The best solar panels may sometimes be the simplest. Enjoy!

Part 2 of a 2 part series showing how to install a cheap cost effective solar hot water heater. greenpowerscience.com

I live in Brownsville Texas were the sun is free not the light bill.

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April 6, 2009 Science at the Theater talk: By exploiting the powers of nanotechnology and taking advantage of non-toxic, Earth-abundant materials, Berkeley Lab’s Cyrus Wadia has fabricated new solar cell devices that have the potential to be several orders of magnitude less expensive than conventional solar cells. And by mastering the chemistry of these materials—and the economics of solar energy—he envisions bringing electricity to the 1.2 billion people now living without it.

The handful of countries with the biggest economies and most emissions of greenhouse gases are meeting twice before climate-treaty talks culminate in Copenhagen in December. Should they make R&D, particularly on solar power, a priority? More on www.nytimes.com