The photographer Sebastiao Salgado, in New York City on Thursday, says we are at a "special moment" — our world now needs to be protected from climate change and other forces.
Misha Friedman for NPR
President Obama and Vice President Biden on Friday debuted the "It's On Us" campaign to help colleges and universities prevent and respond to sexual assault on campus.
J. Scott Applewhite/AP
"It's one of those moments in your life where you're so conscious about what you're about to do, and what you're about to do will change your life." -- Geena Rocero
James Duncan Davidson/TED