Tractors sit on a sugarcane plantation on the land of a Guarani-kaiowá indigenous community in Brazil. Tatiana Cardeal/Courtesy Oxfam hide caption

itoggle caption Tatiana Cardeal/Courtesy Oxfam

A relief worker looks over boxes of aid provided by the U.S. on November 14, 2013 in Leyte, Philippines. Proponents of food aid reform say it makes more sense for the U.S. to buy food donations locally than ship them across the globe. Chris McGrath/Getty Images hide caption

itoggle caption Chris McGrath/Getty Images

Crisco was the original product made with partially hydrogenated soybean oil, which contains trans fats. Today, Crisco has only small amounts of the fats. Tony Dejak/AP hide caption

itoggle caption Tony Dejak/AP

In recent years, pork producers have found ways to keep the animals healthy through improved hygiene. M. Spencer Green/AP hide caption

itoggle caption M. Spencer Green/AP

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

itoggle caption Scott Eells/Bloomberg/Bloomberg via Getty Images

The long arms of pivot irrigation rigs deliver water from the Ogallala Aquifer to circular fields of corn in northwestern Kansas. Dan Charles/NPR hide caption

itoggle caption Dan Charles/NPR

Patricia Whisnant, who runs Rain Crow Ranch in Doniphan, Mo., says her grass-fed beef can compete with the Australian product because it has a better story American consumers can connect with. Courtesy of Rain Crow Ranch hide caption

itoggle caption Courtesy of Rain Crow Ranch

Black soldier flies mate and lay eggs inside these cages at EnviroFlight. Dan Charles/NPR hide caption

itoggle caption Dan Charles/NPR

Genetically modified to be enriched with beta-carotene, golden rice grains (left) are a deep yellow. At right, white rice grains. Isagani Serrano/International Rice Research Institute hide caption

itoggle caption Isagani Serrano/International Rice Research Institute