A test field of sorghum outside Manhattan, Kan., planted by Kansas State University. Dan Charles/NPR hide caption

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Kids might be more satisfied if they get one good treat instead of one good treat and one lesser treat. iStockphoto.com hide caption

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The amount of water to make the bottle could be up to six or seven times what's inside the bottle, according to the Water Footprint Network. Steven Depolo/Flickr hide caption

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For $300, a share from Cheryl Wixon's Kitchen will get you 54 jars of pasta and pizza sauces, cranberry ketchups and fruit jams and butters delivered between November and April. Courtesy of Andrea Hand hide caption

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Roger Gordon (left) is offered a box of bananas from a worker who was throwing away the lightly speckled fruit at Mexican Fruits in Washington, D.C. Gordon's startup, Food Cowboy, works with truckers to divert edible produce from landfills to food charities. Serri Graslie/NPR hide caption

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Warren Buffett (left), Howard G. Buffett (center) and grandson Howard W. Buffett collaborated on a book about the challenges of feeding more than 2 billion more mouths by 2050. Scott Eells/Bloomberg/Bloomberg via Getty Images hide caption

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