David Christian is a Distinguished Professor of History at Macquarie University and director of Macquarie University's Big History Institute. He cofounded the Big History Project with Bill Gates, his Coursera MOOCs are popular around the world, and he is cocreator of the Macquarie University Big History School. He has delivered keynotes at conferences around the world, including the Davos World Economic Forum, and his TED Talk has been viewed more than seven million times. He is the author of numerous books and articles.