The dengue-fever case counts now break regional records every year—and the structural reasons behind the spike suggest this sometimes-deadly virus will soon threaten more of the world. Breaches and security holes keep revealing how much of the internet’s innards are maintained by volunteers; we ask why (09:45). And the case for moving over, not up, at work (17:10). 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. Hosted on Acast. See acast.com/privacy for more information.