Enlarge this image Sen. John McCain, R-Ariz., and Sen. Marco Rubio, R-Fla., talk on Capitol Hill in 2014. Both are expected to win their primaries for reelection Tuesday. Carolyn Kaster/AP hide caption toggle caption Carolyn Kaster/AP Sen. John McCain, R-Ariz., and Sen. Marco Rubio, R-Fla., talk on Capitol Hill in 2014. Both are expected to

Enlarge this image After a Cologuard screening test for colon cancer comes back positive, patients may have to pay for additional diagnostic tests. Exact Sciences hide caption toggle caption Exact Sciences After a Cologuard screening test for colon cancer comes back positive, patients may have to pay for additional diagnostic tests. Exact Sciences When DNA

MICHEL MARTIN, HOST: Finally, today, we’d like to mark the 53rd anniversary of a March on Washington. On this date in 1963, a crowd of at least 250,000 people gathered on the National Mall in Washington, D.C., to hear what would become one of the best known and, for many, one of the best loved

Enlarge this image Singer Juan Gabriel performs during the Latin Grammy Awards in 2009. MARK RALSTON/AFP/Getty Images hide caption toggle caption MARK RALSTON/AFP/Getty Images Singer Juan Gabriel performs during the Latin Grammy Awards in 2009. MARK RALSTON/AFP/Getty Images Juan Gabriel, a singular superstar who transcended borders and the trappings of gender with meticulously crafted pop

Enlarge this image At the start of the school year, Stephen Brooks likes to ask students at Dartmouth College to look around the globe and choose a region where they think the U.S. could pull back. Would they shrink the U.S. footprint in Western Europe, East Asia or the Middle East? Most students used to

MICHEL MARTIN, HOST: A few weeks ago, we told you about a new law in Texas that allow students, if they are licensed, to bring concealed guns to public college campuses. We spoke with a University of Texas professor who asked a judge to block the law. That effort failed. But as Syeda Hasan, from

Enlarge this image Poet Max Ritvo who chronicled his long battle with cancer has died. He was 25. Judith Eigen Sarna/AP hide caption toggle caption Judith Eigen Sarna/AP Poet Max Ritvo who chronicled his long battle with cancer has died. He was 25. Judith Eigen Sarna/AP Max Ritvo, a poet who chronicled his long battle

Enlarge this image Donald Trump speaks at Sen. Joni Ernst’s Roast and Ride Fundraiser on the Iowa State Fairgrounds in Des Moines, Iowa. Clay Masters/Clay Masters hide caption toggle caption Clay Masters/Clay Masters Donald Trump speaks at Sen. Joni Ernst’s Roast and Ride Fundraiser on the Iowa State Fairgrounds in Des Moines, Iowa. Clay Masters/Clay

An animal rights activist is being tried in Canada on charges of criminal mischief because she gave water to pigs bound for the slaughterhouse. Anita Krajnc faces a maximum of six months in jail or a $5,000 fine if convicted, and she has pleaded not guilty, according to the CBC. The pigs were on their

A federal appeals court in Chicago ruled this week that a woman living in the United States illegally should not face immediate deportation simply because she was convicted of using a false Social Security number to work. A unanimous ruling by a three-judge panel of the 7th U.S. Circuit Court of Appeals said that the

Enlarge this image Signage outside a restroom at 21c Museum Hotel in Durham, N.C. A North Carolina law limiting bathroom choice for transgender people is being challenged in a federal court in Raleigh. Gerry Broome/AP hide caption toggle caption Gerry Broome/AP Signage outside a restroom at 21c Museum Hotel in Durham, N.C. A North Carolina

Enlarge this image These are insect cells infected with the Guaico Culex virus. The different colors denote cells infected with different pieces of the virus. Only the brown-colored cells are infectious, because they contain the complete virus. Michael Lindquist/Cell Press hide caption toggle caption Michael Lindquist/Cell Press These are insect cells infected with the Guaico