Ellen MacArthur talks about her work on the concept of a circular economy.
In the UK animal testing for pharmaceuticals is mandatory, but banned for cosmetics. Should we undertake animal testing for new drugs or would it be just as useful to predict drug behaviour in humans using alternative methods? Dr Laura Waters talks through her Charles Darwin Award-winning research.
Professor Jim Al-Khalili talks to the Festival Film Crew about science, religion, Rutherford and more.