A new study of the dental plaques of three Neanderthals reveals surprising facts about their lives, including what they ate, the diseases that ailed them and how they self-medicated (and smooched). (Above) An illustration of Neanderthals in Spain shows them preparing to eat plants and mushrooms. Courtesy of Abel Grau/Comunicación CSIC hide caption

Keggie Carew — seen here with her father, Tom Carew — says, "It was never mundane with dad, even with dementia." Courtesy of Grove Atlantic hide caption

Memory athletes like Sue Jin Yang — competing here in the 17th annual USA Memory Championship in New York City in 2014 — wear headphones to block out distractions as they memorize the order of decks of cards. Carolyn Cole/LA Times via Getty Images hide caption

Part of one of the world's biggest renewable energy systems, wind turbines dot the landscape on the edge of Sweetwater, Texas, along with a pump jack pulling up oil. Ari Shapiro/NPR hide caption

Jerusha Hodge is among the handful of CeaseFire outreach workers who work to curtail violence in three South Side Chicago neighborhoods. Hodge says shootings are down in the areas where CeaseFire has a presence. Cheryl Corley/NPR hide caption

Louise Mensch, founder of the political site Heat Street and a former member of Parliament, wrote about the FBI's investigation into activities by Trump campaign figures with ties to Russia. Stefan Wemuth/WPA Pool/Getty Images hide caption

Eleven-year-old Ty Waters channels the energy of Michael Jackson, Stevie Wonder and others on his debut album, Only Human. Neal Hilton/Courtesy of the artist hide caption