Campaigning for a coming election in the world’s fourth-most-populous country has been almost entirely policy-free: a good social-media presence is nearly all candidates need. As the Panama Canal dries out, neighbouring countries spy an opportunity—but how much of that trade can they expect to siphon off (09:11)? And, the wild boar hybrids causing havoc on Canada’s prairies (15:56). 

Sign up for a free trial of Economist Podcasts+. If you’re already a subscriber to The Economist, you’ll have full access to all our shows as part of your subscription. For more information about how to access Economist Podcasts+, please visit our FAQs page or watch our video explaining how to link your account.