Auschwitz survivor Eva Kor sits in a courtroom in Lueneburg, northern Germany, on April 21, 2015. She testified at the trial of 93-year-old former Auschwitz guard Oskar Groening. Julian Stratenschulte/AP hide caption

Gloria Steinem and South Korean peace activists march along a military fence at a checkpoint after crossing the border separating North and South Korea. Jung Yeon-Je/AFP/Getty Images hide caption

The new African Burying Ground Memorial Park was dedicated on Saturday in Portsmouth, N.H. Emily Corwin/NHPR hide caption

Portrait of Muhammad Ali with Sports Illustrated photographer Neil Leifer during photo shoot at Life Studios, New York, NY. Photo from Relentless: The Stories behind the Photographs, by Neil Leifer with Diane K. Shah (University of Texas Press, 2016) Courtesy of Sports Illustrated Content Management hide caption

Kenneth Choi plays the role of Chester Ming in The Wolf Of Wall Street. He gained 20 pounds for the role. Red Granite Pictures/The Kobal Collection hide caption

The Speck air quality monitor costs $200, but is available to all through Pittsburgh's public library system. Carnegie Mellon University CREATE Lab hide caption

Madisen Ward and the Mama Bear's debut album, Skeleton Crew, is out now. Danny Clinch/Courtesy of the artist hide caption