Fred George and Gunter Schmidt-Gonner talk about an unusual sculpture George, a US-based sculptor, created that makes a 15-metre tall peace sign out of 80 oil barrels and 80 solar panels, which he says could be on display at the COP-15 talks in Bonn. Schmidt-Gonner, a German civil engineering professor, explains the technical aspects of making George’s sculpture actually generate power and explains the symbolism of the project. Also see Jorgen Tang-Jensen, CEO of Velux, speaking from Copenhagen