Babbage: Back to school

As debates over vaccinating children rage and the Delta variant of covid-19 surges in many countries, what impact will the return to classrooms have on the covid-19 pandemic? Also, our science correspondent Alok Jha asks ecologist Meg Lowman about the secrets that can be revealed by exploring the treetops. And the northern white rhino is nearing extinction, but can technology bring this species back from the brink? Kenneth Cukier hosts. For full access to The Economist’s print, digital and audio editions subscribe at economist.com/podcastoffer and sign up for our new weekly science newsletter at economist.com/simplyscience.Terms and conditions for the book competition featured in this podcast are available at economist.com/podcast-contest. Hosted on Acast. See acast.com/privacy for more information.