A run-down of green technology’s most cutting-edge innovations, including transparent solar cells and microgeneration boilers

Earlier this year Sir David King, former chief scientific adviser to the UK government and now the special representative for climate change, told a climate conference that there should be a greater focus on green technologies to help tackle climate change. While most people would have no problem with this idea, the real issue is which technologies to back. We are not short on innovation.

Over the last 20 years, there have been 1.2m granted patents and published patent applications from across the US, Europe and some world territories, on the clean tech patenting site CleanTech PatentEdge.

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