Agence France-Presse: With all eyes on US efforts to combat climate change at next week’s UN summit in Copenhagen, one Kansas town is going green in a big way — and setting an example for American communities. On the evening of May 4, 2007, a category-five tornado swept through the rural midwestern town of Greensburg, killing nine people and obliterating 95 percent of the urban landscape, including the school, the hospital and more than 900 houses. But this community of 1,400 is rebuilding stronger …