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According to a new report Cleantech Redefined: Why the Next Wave of Cleantech Infrastructure, Technology and Services Will Thrive in the 21st Century, by research firm Kachan and non-profits As You Sow and the Responsible Endowments Coalition, the second most popular retail investment during 2013, after property, was in clean energy; a quarter of all venture capital in 2012 went into clean technologies; and in the third quarter of 2013 venture capital deals for clean tech were 64 percent higher than in the first quarter, clear sign of an upturn.