Just 12 hours after Donald Trump launched his searing regime of tariffs, he paused many of them for 90 days. What's next for global trade? An outlandish proposal to build data centres in space (8:14). And why “The Great Gatsby” is just as relevant, 100 years on (15:58).Listen to what matters most, from global politics and business to science and technology—Subscribe to Economist Podcasts+For more information about how to access Economist Podcasts+, please visit our FAQs page or watch our video explaining how to link your account.