Two teenagers from Cardiff have beaten learners from across Wales to win a national debating competition and represent the UK at a global exhibition in Dubai. Marzooq Subhani, 16, and Crystal Tran, 15, both Seren learners at Willows High School in Splott, secured their places to attend and debate at this year’s World Expo in Dubai after winning the Welsh leg of the ‘Dubai Expo Factor’ – a UK competition which sees teams of two young people from across the…