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Nurse Claire Bertschinger's appearance in a TV report about the 1984 Ethiopian famine inspired the Band Aid charity. Now she is training nurses to travel to countries affected by Ebola.

Adrian Stimson served as a war artist in Afghanistan with the Canadian military. He is also a member of the First Nation Sik Sika Black Foot tribe in Northern Canada. Now he uses art to draw attention to the treatment of indigenous people.

Residents of Mosul, the Iraqi city now controlled by the so-called Islamic State, have written an exclusive series of diaries for the 鲍鱼tv. They describe what life is like under the harsh rule of the jihadists.

Arthur Zang is a 26-year-old inventor from Cameroon who hopes to bring about a revolution in care for people with heart problems. He has invented the Cardiopad, a portable heart monitor that allows a patient, wherever they are in the country, to be remotely checked over by a cardiologist.

(Picture: Claire Bertschinger after being made a Dame by Queen Elizabeth II at Buckingham Palace. Credit: Dominic Lipinski/WPA Pool/Getty Images)