20:32CrowdScienceHow does a breeze become a gale?BBC World Service Duration: 28 minutes Fri 20th Nov 2020, 20:32 on BBC World Service OnlineAvailable for over a yearListen nowWhy are some winds friendly and others fierce? Show more GenresFactualScience & NatureScience & TechnologyFormatsDiscussion & TalkBrandCrowdScience Source: BBC Online