Dartmouth College President Philip Hanlon speaks Thursday to faculty and students about changes planned for the Ivy League school. Dartmouth banned hard liquor on campus and said all students will have to take part in a sexual violence prevention program all four years they are enrolled at the Ivy League school. Jim Cole/AP hide caption

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New apartment buildings are replacing empty lots in Mantua, one of Philadelphia's poorest neighborhoods. Will Figg for NPR hide caption

itoggle caption Will Figg for NPR

Emily Neblett, a patient at the Monroe Carell Jr. Children's Hospital in Nashville, Tenn., demonstrates circuit pieces from the mobile maker space that are connected by magnets. Noah Nelson/Youth Radio hide caption

itoggle caption Noah Nelson/Youth Radio

One Saturday each month, the Pacific Science Center of Seattle opens early for people with autism spectrum disorders. John Keatley/Pacific Science Center hide caption

itoggle caption John Keatley/Pacific Science Center

Elspeth Ventresca, center, and the rest of Carolyn Barnhardt's prekindergarten class at John Eaton Elementary School wear the crowns they made to celebrate Rev. Martin Luther King Jr.'s birthday. Emily Jan/NPR hide caption

itoggle caption Emily Jan/NPR