Who leads the world in clean tech development (measured by percentage of Gross Domestic Project)? Withh 3.1 percent of their GDP derived from renewable energy technology and energy efficiency, the Danes are Number One. The Chinese are second, having grown their green investment nearly 77% in the last three years alone. The United States? Number 17 (behind Germany, Brazil, and Lithuania) with just 0.3 percent of our GDP coming from the clean energy sector. With green tech set to drive the world’s economies by mid-century, are we up to the challenge?

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