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All other G20 nations lag behind for percentage of GDP spent on green infrastructure, United Nations book says.
LiveFuels to grow algae in its natural environment and harvest the oil from the fish that eat it. The harvested oil could fuel cars and trucks, the company says.
Company is increasing its investment in its green-tech R&D program Ecomagination but is toning down growth estimates.
UN report predicts that by 2020, e-waste from computers will grow by up to 400 percent from 2007 levels in China and South Africa.
Global group says organized effort to implement current technology can improve global fuel efficiency by 50 percent.