Nick Grassly on a new polio vaccine that protects 30% more susceptible children in northern India.

Dr Michael Beasley and Alice Woolnough on a scheme to keep HIV positive teachers in Africa in schools.

Part two - Professor Peter Piot interview - why non-infectious 'lifestyle' diseases are the big challenge of the future.

Part one - Professor Peter Piot interview - why tackling global health is the key to international development.

Sir Gordon Conway on working for the Department for International Development, development in China and tackling poverty at home and overseas.

Professor Peter Smith, co-director of the Centre for Health Policy, on the challenges today's health policy makers face and how the centre aims to address these issues

Imperial's Professor Elio Riboli and Professor Paul Elliott are helping to establish a huge bank of medical data and samples in Qatar for research into common diseases.

Professor Yang on harnessing Imperial's strengths in innovation for improving global health and his role as the Institute's Deputy Chairman

Professor Darzi on the aims of the Institute of Global Health Innovation and his role as the Institute's Chairman

Tom Cloke and Dr Matthew Rogers talk about a disfiguring skin disease at the Royal Society Summer Science Exhibition