Babbage: Baidu it

<p>As the Chinese tech giant Baidu prepares for a secondary listing on the Hong Kong stock exchange, how will Baidu’s rise influence technological innovation in China and beyond? Also, the <a href="https://www.economist.com/science-and-technology/2021/03/06/face-masks-can-give-the-immune-system-a-helpful-hand?utm_campaign=babbage&amp;utm_medium=podcast&amp;utm_source=third-party-host&amp;utm_content=show-notes" rel="noopener noreferrer" target="_blank">humidity inside facemasks</a> is helpful in fighting covid-19, not just preventing transmission. And Dr Tolullah Oni, an urban epidemiologist, on improving health in rapidly growing cities. Kenneth Cukier hosts&nbsp;</p><p><br></p><p><br></p><p>For full access to The Economist’s print, digital and audio editions subscribe at <a href="http://www.economist.com/podcastoffer?utm_campaign=babbage&amp;utm_medium=podcast&amp;utm_source=third-party-host&amp;utm_content=show-notes" rel="noopener noreferrer" target="_blank">economist.com/podcastoffer</a> and sign up for our new weekly science newsletter at <a href="http://www.economist.com/simplyscience?utm_campaign=babbage&amp;utm_medium=podcast&amp;utm_source=third-party-host&amp;utm_content=show-notes" rel="noopener noreferrer" target="_blank">economist.com/simplyscience</a>.</p> &#10;&nbsp;<br /><hr><p style='color: grey; font - size: 0.75em; '>See <a style='color: grey; ' target='_blank' rel='noopener noreferrer' href='https://acast.com/privacy'>acast.com/privacy</a> for privacy and opt-out information.</p>