Rid The World of Toxic and Radioactive Waste

Obama's Challenge: Dispose of radioactive wastes and toxic chemicals quickly, inexpensively, and safely.

Who's Got a Shot: While Walmart may not develop the actual technology, its pressure on global suppliers to focus on product sustainability is already forcing innovations upon businesses that want their products stocked on the retail giant's shelves. Meanwhile, companies such as Dell and Apple are engineering electronics that don't create waste in the first place. Other advances will come from government agencies such as the Environmental Protection Agency when further iterations of nuclear power are explored.