National Public Radio host, Michel Martin asks a question at the live performance of Martin's show, Going There at Colorado State University Tuesday May 24, 2016. The show was titled, " The Future of Water."
V. Richard Haro/Richard Haro Photography
A man crosses a bridge over the Poudre River, in Fort Collins, Colo. The picturesque river is the latest prize in the West's water wars, where wilderness advocates usually line up against urban and industrial development.
An assortment of organic vegetables is seen on display. A growing body of evidence documents how farming methods can influence the nutritional content of foods.
Justin Sullivan/Getty Images
This undated photo shows Rosa Parks riding on the Montgomery Area Transit System bus. Parks refused to give up her seat on a Montgomery bus on Dec. 1, 1955, and ignited the boycott that led to the end of legal segregation in public transportation.
Young people attend a political rally before the recent Jefferson-Jackson dinner in Iowa. Energizing young voters may be a challenge for presidential candidates ahead of 2016.
#NPRYouthVote: Will Young Voters Lead Or Lag In 2016?
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Mamie Parker, a fish and wildlife biologist with a doctorate in ecology, remembers a janitor at work once telling her: "No African-American woman has been in here except to clean this office."
A Los Angeles Police Department car follows protesters as they march near the city's 77th Street police station last August. It was a protest of the fatal LAPD shooting of Ezell Ford.
Mark J. Terrill/AP
U.S. Sen. Tim Scott bows his head in prayer during a prayer vigil held at Morris Brown AME Church on Thursday, June 18, 2015 in Charleston, S.C. The service honored victims of Wednesday's shooting at Emanuel AME Church.
Michel Martin's father was a New York City firefighter in 1968, when race riots erupted in neighborhoods across the city and country. His memorial card sits on his dented helmet from those years.