Robots move racks of merchandise at an Amazon fulfillment center in Tracy, Calif. When a robot finds its storage unit, it glides underneath, lifts it up and then delivers it to a worker.
Justin Sullivan/Getty Images
Many of the challenges the teachers and administration work on with homeless children are social skills techniques for managing stress, anxiety and feelings. Here, students in Shelly Fryer's class take time for play.
Katie Hayes Luke for NPR
Students in Tijuana walk toward the U.S. border early in the morning on May 2. Teachers in San Diego estimate that about 1,000 students cross from Tijuana into San Diego every day to go to school.
Jonathan Levinson for NPR
Harvard University President Drew Gilpin Faust poses for a portrait on campus in Cambridge, Mass. Faust has announced that she will step down next year.
Jessica Rinaldi/The Boston Globe/Getty Images
Yale graduate student instructors (from left) Kelly Goodman, Robin Canavan and Gwen Prowse block an intersection in downtown New Haven, Conn., on May 11, to protest what they say is the university's inaction on sexual harassment.
Local 33-Unite Here