Babbage: Keeping it cool

<p>Solar geoengineering has the potential to help counteract <a href="https://www.economist.com/science-and-technology/the-ipcc-delivers-its-starkest-warning-yet-about-climate-change/21803522?utm_campaign=babbage&amp;utm_medium=podcast&amp;utm_source=third-party-host&amp;utm_content=show-notes" rel="noopener noreferrer" target="_blank">global warming</a>, so <a href="https://www.economist.com/science-and-technology/2021/08/14/geoengineering-is-conspicuously-absent-from-the-ipccs-report?utm_campaign=babbage&amp;utm_medium=podcast&amp;utm_source=third-party-host&amp;utm_content=show-notes" rel="noopener noreferrer" target="_blank">why are scientists so cautious about it</a>? Host Kenneth Cukier also explores <a href="https://www.economist.com/science-and-technology/2021/07/21/a-new-green-air-conditioning-system-manages-without-nasty-gases?utm_campaign=babbage&amp;utm_medium=podcast&amp;utm_source=third-party-host&amp;utm_content=show-notes" rel="noopener noreferrer" target="_blank">a new, green idea that could revolutionise air conditioning</a>. And<em> </em>our obituaries editor remembers <a href="https://www.economist.com/obituary/2021/07/28/steven-weinberg-died-on-july-23rd?utm_campaign=babbage&amp;utm_medium=podcast&amp;utm_source=third-party-host&amp;utm_content=show-notes" rel="noopener noreferrer" target="_blank">Steven Weinberg</a>, a Nobel laureate in physics who united two of the known forces in the universe.</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>