The numbers don’t lie: venture capitalists are not investing in cleantech any more. At first, the decline could be attributed to a slowdown in venture activity. But in 2012, that’s not the case. The category accounted for 15 percent to 18 percent of all venture activity from 2008 to 2011. Numerous data sources support that that has dropped by as much as 32 percent in 2012. [Source: Bostinno]