Multiple crises come as voters in the United States prepare to elect a new president. As war spreads across the globe, a record 60 million people were driven from their homes last year. Experts warn the refugee crisis may also worsen due to the impacts of global warming. Over the weekend, NASA released data showing 2016 is on pace to be by far the hottest year ever, breaking the 2015 record. Meanwhile, many fear a new nuclear arms race has quietly begun, as the United States, Russia and China race to build arsenals of smaller nuclear weapons. These multiple crises come as voters in the United States prepare to elect a new president. We speak with one of the world’s preeminent intellectuals,...