Green-tech news harvest: Turning CO2 to stone, health problems with Priuses?

Senate hears from ethanol experts; new microbes for biofuels; a profile of Masdar City; scientists look to liquify and petrify CO2 for storage; the lowdown on carbon trading;

A sampling of green-tech news.

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The problem with hoarding photos on your phone

Do you have hundreds (or thousands) of photos on your phone? This one's for you.

by Sharon Profis