There are three types of economics-minded people in Donald Trump’s incoming administration. We ask whether they are likely to collaborate or to compete. Tourism clearly adds to emissions, but new numbers show just how fast that fraction is rising (9:58). And the next in our The World Ahead series reveals a familiar planetary phenomenon that will disappear in 2025 (17:07).   Get a world of insights by subscribing 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. Hosted on Acast. See acast.com/privacy for more information.