09:32DiscoveryGeoengineering The PlanetBBC World Service Duration: 27 minutes Tue 9th Nov 2021, 09:32 on BBC World Service OnlineAvailable for over a yearListen nowHow we cool the planet with the latest geoengineering technologies. Show more GenresFactualScience & NatureFormatsMagazines & ReviewsBrandDiscovery Source: BBC Online