Why it's not easy being green

PALM DESERT, Calif.--Numerous technologies exist to curb energy consumption and greenhouse gas emissions. The problem is that consumers lack the willpower to embrace them, according to at least one energy expert.

"This country only gets excited about energy when oil prices get high," Dan Arvisu, director of the National Renewable Energy Laboratory, said during a presentation at the Clean-Tech Investor Summit taking place here. "We do have a problem with how serious we are about our energy challenges."

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