Green-tech news harvest: barter economy thrives online, solar stocks in slump

Networking sites expand for exchanging goods; courts tie coal power to carbon emissions; more bad news for bees; SUVs prices plunge; new biodiesel standards.

A sampling of green-tech news with quick commentary.

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Toshiba's Radius 12 is a stunning hybrid laptop with some comfort issues

It seems speedy and it has a beautiful screen, but the Toshiba Satellite Radius 12 might not be worth your money. CNET's Sean Hollister goes hands-on.

by Sean Hollister