Strawberry pickers in Watsonville, Calif. Many farmworkers in the state are out of work because of the severe drought. Those who do have a job are often working harder for less money. Lesley McClurg/For NPR hide caption

itoggle caption Lesley McClurg/For NPR

All the talk about immigration in the U.S. presidential campaign has renewed focus on the linguistic question of how to refer to people from Latin America. Here, the flags of Latin American and Caribbean states fly at a regional summit in San Jose, Costa Rica, in January. Arnoldo Robert/LatinContent/Getty Images hide caption

itoggle caption Arnoldo Robert/LatinContent/Getty Images

Sen. Bernie Sanders in his office in 1981, shortly after becoming mayor of Burlington, Vt. He once said his tenure as a socialist mayor is evidence people are willing to accept radical change. Donna Light/AP hide caption

itoggle caption Donna Light/AP

President George W. Bush (center) surveys the devastation in New Orleans with (from left to right) Vice Adm. Thad Allen, Louisiana Gov. Kathleen Blanco, Mayor Ray Nagin and Lt. Gen. Russel Honore on Sept. 12, 2005, two weeks after Hurricane Katrina slammed into the Gulf Coast. Jim Watson/AFP/Getty Images hide caption

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Almonds hang from a branch at an orchard in Firebaugh, Calif. Despite the strain of prolonged drought, in 2014, California farms sold $54 billion worth of crops like almonds or grapes, and animal products like milk. Justin Sullivan/Getty Images hide caption

itoggle caption Justin Sullivan/Getty Images

Margaret Sanger appears before a Senate committee for federal birth-control legislation in Washington, D.C., on March 1, 1934, arguing that federal courts be given the right to discuss contraceptive methods with their patients. Anonymous/AP hide caption

itoggle caption Anonymous/AP

Male and female tungara frogs. Among these frogs, the guy with the best call usually wins the gal — except when you throw a third-choice loser into the mix. Alexander T. Baugh/Encyclopedia of Life hide caption

itoggle caption Alexander T. Baugh/Encyclopedia of Life

Doudou N'Diaye Rose was a brilliant musician and a brilliant dresser as well, with a custom-made wardrobe of vivid, billowing outfits. Above, wearing Senegal's national colors, he sets the beat at a concert in Dakar on Dec. 10, 2010. Seyllou Diallo/AFP/Getty Images hide caption

itoggle caption Seyllou Diallo/AFP/Getty Images

Debris covers a road after heavy rains from Tropical Storm Erika hit the Caribbean island of Dominica in this picture from Robert Tonge, Dominican Minister for Tourism and Urban Renewal, taken on Thursday. HANDOUT/Reuters/Landov hide caption

itoggle caption HANDOUT/Reuters/Landov

Mitt Romney peers over the podium at guests being pointed out by his wife, Ann, during an event at which Donald Trump endorsed Romney in 2012. Ethan Miller/Getty Images hide caption

itoggle caption Ethan Miller/Getty Images

During a test last November, the intermediate range ballistic missile Shaheen 1A (Hatf IV) is launched from an undisclosed location in Pakistan in a photo supplied by the Pakistani military. The missile is said to be capable of carrying nuclear warheads. [E]yisilanbao/Xinhua/Landov hide caption

itoggle caption [E]yisilanbao/Xinhua/Landov