User:Acd64
Grand Challenge Article
Leading Engineers and Scientists Identify Advances That Could Improve Quality of Life Around the World, National Science Foundation, updated 20 February 2008, accessed 15 August 2008 (Grand Challenge)
Grand Challenge Article
Leading Engineers and Scientists Identify Advances That Could Improve Quality of Life Around the World, National Science Foundation, updated 20 February 2008, accessed 15 August 2008 (Grand Challenge)