Jessi Hempel is head of editorial for Backchannel. A former senior writer at WIRED, she has written recently about Facebook’s Internet.org, and profiled Microsoft CEO Satya Nadella as well as U.S. Secretary of Defense Ashton Carter. Before joining WIRED, she was a senior writer for Fortune, where she penned cover stories on Yahoo! Facebook, Twitter, LinkedIn and IBM, and co-chaired Fortune’s Aspen tech conference. Earlier in her career, Hempel wrote about design and technology for BusinessWeek.