The Salt What's On Your Plate

A woman holds the saffron crocus, during the saffron harvest in Herat, Afghanistan (left). Saffron flowers are collected in Saint Hippolyte, eastern France (right). Since the stigmas need to be picked from the flowers by hand, saffron is the world's most expensive spice. Majid Saeedi/Getty Images; Maxppp /Landov hide caption

itoggle caption Majid Saeedi/Getty Images; Maxppp /Landov

There's new evidence reaffirming that eating foods with fat — everything from avocados and salmon to dairy fat — doesn't make us fat. eyecrave LLC/iStock hide caption

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Across Washington State, hydroelectric dams are blocking salmon as they migrate to their spawning grounds. Enter the salmon cannon. Ingrid Taylar/Flickr hide caption

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A campaign called Behind The Brands, led by Oxfam International, is trying to make the inner workings of the 10 biggest food companies in the world more visible to consumers. iStockphoto.com hide caption

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About 84 percent of food products that contain trans fats still carry a "zero gram" label, which may mislead consumers, researchers say. Tony Dejak/AP hide caption

itoggle caption Tony Dejak/AP

Bob O'Connor, a Foster Farms veterinarian, holds an 11-day-old chick at a ranch near the town of Merced, in California's Central Valley. Dan Charles/NPR hide caption

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Tractors sit on a sugarcane plantation on the land of a Guarani-Kaiowá indigenous community in Brazil, where Oxfam has alleged "land grabs" unfairly take land from the poor. The United Nations is drafting voluntary guidelines for "responsible investment in agriculture and food systems" in response to such concerns. Tatiana Cardeal/Courtesy of Oxfam hide caption

itoggle caption Tatiana Cardeal/Courtesy of Oxfam

Edibles available at LoDo Wellness Center, a retail marijuana and medical marijuana dispensary and grow facility in downtown Denver. Matthew Staver/Landov hide caption

itoggle caption Matthew Staver/Landov

Meat is displayed in a case at a grocery store in Miami in July. Pork and beef prices are up more than 11 percent since last summer. Joe Raedle/Getty Images hide caption

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Yolanda Andujar and her daughter Astrid bake together every weekend. Andujar primarily makes the cakes while Astrid, a graphic designer by day, makes elaborate decorations using fondant and bright colors. Néstor Pérez-Molière/Courtesy of Feet in 2 Worlds hide caption

itoggle caption Néstor Pérez-Molière/Courtesy of Feet in 2 Worlds

An orange showing signs of "citrus greening" this spring in Fort Pierce, Fla. Joe Raedle/Getty Images hide caption

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Peanut and tree nut allergies plague an estimated 19 million kids and adults in the U.S., and the number of children with peanut allergies in the U.S. has nearly doubled in just over a decade. Peter Reali/Corbis hide caption

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A street market remains empty in Monrovia's West Point slum as part of quarantine measures to contain the spread of Ebola in Liberia. Zoom Dosso/AFP/Getty Images hide caption

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Nestle, the world's biggest food company, manufactures and markets a wide range of food products including dairy, meat, poultry and eggs. Susana Gonzalez/Bloomberg via Getty Images hide caption

itoggle caption Susana Gonzalez/Bloomberg via Getty Images