05:32DiscoveryThe Life Scientific: Harald HaasBBC World Service Duration: 27 minutes Tue 29th Aug 2023, 05:32 on BBC World Service Americas and the CaribbeanAvailable for over a yearListen nowHarald Haas on making waves in light communication. Show more GenresFactualScience & NatureFormatsMagazines & ReviewsBrandDiscovery Source: BBC Online