working on, but the challenges of climate change and technology transformation and so forth. So it expanded my outlook, the questions that I was asking my colleagues, because suddenly I was a director of an institute with hundreds of climate scientists, including a unit of NASA. So it was really quite interesting, quite extraordinary. And I headed the Earth Institute for 14 years from 2002 to 2016. I served as special advisor for three secretaries general, Kofi Annan, Ban Ki-moon, and Antonio Guterres. I continue to be a senior advisor of the United Nations. I've now worked in more than 140 countries. So I've seen the world from all different perspectives. And I suppose that that's what draws me more and more to geopolitics right now. Because when you've seen the world not only from the perspective from New York looking out or from Washington looking out, but from Moscow looking across the Atlantic or from Beijing looking across the Pacific or from Nairobi in Kenya and so forth, you (9/45)
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