The race to combat Ebola

Despite available vaccines the latest outbreak of Ebola shows no sign of being contained. Dr Josie Golding is an expert on epidemic preparedness at the Wellcome Trust, and describes the challenges involved in rolling out an effective vaccine for the disease. And Dr Paul Stoffels is chief scientist at Johnson and Johnson, which makes an alternative to the main vaccine being used, and discusses why the company wanted to find a treatment for Ebola. Also in the programme, Boris Johnson will become the UK's next prime minister on Wednesday, after winning the Conservative party leadership contest. We hear from Forbes columnist and finance professor Stephen Pope. Plus we travel to Venice to hear how it's become a city on the frontline in the battle against overtourism.

(Picture: Medical staff at an Ebola treatment centre in Goma. Picture credit: Getty Images.)