00:06Unexpected Elements2021 the year of variantsBBC World Service Duration: 1 hour, 8 minutes Sun 2nd Jan 2022, 00:06 on BBC World Service OnlineAvailable for over a yearListen nowThe year began with Alpha and ends with Omicron, what have we learnt? Show more GenresFactualScience & NatureFormatsDiscussion & TalkBrandUnexpected Elements Source: BBC Online