Ten years ago on Friday, a flight took off from Malaysia’s capital, Kuala Lumpur. It was headed to Beijing. During the flight, the plane changed course, turning south toward the Indian Ocean. It’s transponder was turned off midflight and was never heard from again. Malaysia Airlines Flight MH370 and the 239 people onboard remain missing. But their families never stopped searching. From Kuala Lumpur, The World’s Patrick Winn reports on new hopes for solving the world’s greatest aviation mystery.