HIV in Africa

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The news aggregation website Zimbabwe Today recently ran a headline stating that 74% of African girls aged 15-24 are HIV positive. Although the statistic is not true, Mary Mahy from UNAIDS reveals that young women do have a higher infection rate than young men. Kyle Evans is a folk singing mathematician by trade who is always looking for new ways to communicate his love of maths to a sometimes apprehensive audience. Next week he is representing the UK against 26 other countries at the Cheltenham Science festival in England. He came into the studio to perform his competition entry. (Photo: HIV test in Africa. Credit: Polepole-tochan/Getty Images)