09:32DiscoveryThe colour conundrumBBC World Service Duration: 28 minutes Tue 7th Jun 2022, 09:32 on BBC World Service Americas and the CaribbeanAvailable for over a yearListen nowHow do we see colour and why are some people colour blind? Show more GenresFactualScience & NatureFormatsMagazines & ReviewsBrandDiscovery Source: BBC Online