Here is Van Jones, Special Advisor for Green Jobs, Enterprise and Innovation for the White House Council on Environmental Quality, with  Sara Loveland of DC Greenworks, on the site of a green roof installation. They introduce green roofs and discuss the grant funding the work. If building owners along a corridor who already have to replace their roof membranes put up the money for that, the city will add on a green roof, cutting energy expenses some 30%, cooling the city, mitigating stormwater, and training people in how to do the work.  Green roofs in this case mean green jobs, environmental, economic, engineering and energy-saving benefits, and a potential food source: one solution to many problems.

[youtube=http://www.youtube.com/watch?v=_iYIY9XHOUg&feature=player_embedded]