In Depth: Cooling With The Sun

[greentechmedia:] To make a real dent in global warming, a clean-energy technology has to be cost-competitive with coal—without long-term subsidies. At least that’s what Vinod Khosla argues. Founder of his eponymous Khosla Ventures and, more famously, a co-founder of Sun Microsystems, he says clean energy won’t grow large enough to slow climate change if it isn’t cost-effective.