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Carlo Ratti of MIT designed this "supermarket of the future" exhibit. If you move a hand close to a product, a digital display lights up, providing information on origin, nutritional value and carbon footprint.
Courtesy of COOP Italia
Los Angeles started offering a $3.75 rebate on every square foot of grass replaced with a drought-friendly landscape. The drought is a boost in business for local conservation entrepreneurs.
Frederic J. Brown/AFP/Getty