Sex trafficking and peacekeepers

How whistle-blowers implicated UN peacekeepers and international police in the forced prostitution and trafficking of Eastern European women into Bosnia in the late 1990s.

Plus, how Swiss psychiatrist Elisabeth Kübler-Ross changed the way we think about death and dying when she developed her Five Stages of Grief; Beethoven's role in China's Cultural Revolution; the "friendship train" between India and Bangladesh; and the controversial teaching exercise which segregated children by whether they had blue or brown eyes.

Picture: the United Nations Peacekeeping Force patrols the Bosnian capital Sarajevo in March 1996 (Credit: Roger Lemoyne/Liaison/Getty Images)