The Salt What's On Your Plate

Student volunteers with The Campus Kitchens Project evaluate produce. The initiative gets high-school and college students to scavenge food from cafeterias, grocery stores and farmers' markets, cook it and deliver it to organizations serving low-income people in their communities. Courtesy of DC Central Kitchen hide caption

itoggle caption Courtesy of DC Central Kitchen

A field of unharvested wheat is seen in Ashby-de-la-Zouch, England, in 2012. Wheat wasn't cultivated in Britain until some 6,000 years ago, but DNA evidence suggests early Britons were eating the grain at least 8,000 years ago. Darren Staples/Reuters/Landov hide caption

itoggle caption Darren Staples/Reuters/Landov

A truck drives on top of a levee that protects a soybean field in New Madrid County, Mo., when the Mississippi River floods. Kristofor Husted/KBIA hide caption

itoggle caption Kristofor Husted/KBIA

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Crew members pull an oyster dredge in Tangier Sound of the Chesapeake Bay near Deal Island, Md., in 2013. A study found that the Chesapeake Bay shellfishery is a "hot zone" for ocean acidification. Patrick Semansky/AP hide caption

itoggle caption Patrick Semansky/AP

Diners fill Riverpark, a New York City restaurant, in January. Restaurateurs fear that the tipped-wage hike being proposed in New York will force them to get rid of tipping altogether. Brad Barket/Getty Images hide caption

itoggle caption Brad Barket/Getty Images

A slice of pork belly, with a thick layer of fat. "If we confirm that fat is a basic taste quality, it's the equivalent of saying chartreuse is a primary color," Richard Mattes of Purdue University says. "It changes our basic understanding of what taste is." Xiao He/Flickr hide caption

itoggle caption Xiao He/Flickr

President Franklin Delano Roosevelt drinks a glass of wine at a fundraising dinner in 1938. FDR fancied himself quite the skilled mixologist; many of his colleagues disagreed. Thomas D. McAvoy/The LIFE Picture Collection/Getty Images hide caption

itoggle caption Thomas D. McAvoy/The LIFE Picture Collection/Getty Images

The recipe for guacamole in musician Jack White's concert rider is more like a guacamole salad. But chef Martin Morales says it's pretty good. Ariel Zambelich/NPR hide caption

itoggle caption Ariel Zambelich/NPR

Arctic Granny (right), a GMO variety created by Okanagan Specialty Fruits, got the gren light from federal regulators Friday. The apple doesn't turn brown like a conventional Granny Smith apple (left). Okanagan Specialty Fruits hide caption

itoggle caption Okanagan Specialty Fruits

Fruit by Nike is a piece by designer Peddy Mergui in his exhibit "Wheat is Wheat is Wheat," next on display in May at Expo Milano 2015. Courtesy of Peddy Mergui hide caption

itoggle caption Courtesy of Peddy Mergui

A school of vermilion rockfish. After being depleted decades ago by overfishing, rockfish — a genus of more than 100 tasty species — have made a remarkable comeback. Donna Schroeder/From 'Probably More Than You Want to Know About the Fishes of the Pacific Coast'/Courtesy Milton Love hide caption

itoggle caption Donna Schroeder/From 'Probably More Than You Want to Know About the Fishes of the Pacific Coast'/Courtesy Milton Love

Cattle raised at the U.S. Meat Animal Research Center in Clay Center, Neb. A New York Times investigation of animal suffering at the federal research center has prompted a USDA review. Nati Harnik/AP hide caption

itoggle caption Nati Harnik/AP

Fish on ice in Palau Misa Island, Indonesia. Thanks to satellite data, John Amos of SkyTruth can track fishing activity near the Pacific island nation from his office in West Virginia. Randy Olson/National Geographic/Getty Images hide caption

itoggle caption Randy Olson/National Geographic/Getty Images

Ready to feel the burn? Check out our tips for tiptoeing into hot sauce. John Kuntz/The Plain Dealer/Landov hide caption

itoggle caption John Kuntz/The Plain Dealer/Landov

Steve Kudlacek is an undergraduate at the University of California, Irvine who helped Professor Greg Weiss develop a way to unboil an egg. Steve Zylius/UC Irvine Communications hide caption

itoggle caption Steve Zylius/UC Irvine Communications

Surströmming, a fermented herring considered to be a famous delicacy in Sweden, is also known as one of the most pungent foods in the world. Pauline Conradsson/AFP/Getty Images hide caption

itoggle caption Pauline Conradsson/AFP/Getty Images

Environmental groups cited Wendy's as "Poor" in the area of packaging sustainability. One reason is that the chain still uses black plastic bowls, which cannot be recycled. Lynne Sladky/AP hide caption

itoggle caption Lynne Sladky/AP