20:32DiscoveryGeoengineering The PlanetBBC World Service Duration: 27 minutes Mon 8th Nov 2021, 20:32 on BBC World Service Europe and the Middle EastAvailable for over a yearListen nowHow we cool the planet with the latest geoengineering technologies. Show more GenresFactualScience & NatureFormatsMagazines & ReviewsBrandDiscovery Source: BBC Online