The vice-president turned in a confident if imperfect performance, leaving Donald Trump flustered. But will it change anything? A global shortfall of blood plasma is hampering the development of new medicines; we argue for some simple market forces that could plug the gap (11:40). And how Nigerians are slimming their legendarily lavish weddings amid a cost-of-living crisis (18.10).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.