How a British soldier pledged to help a Bosnian boy with a life-threatening condition.
BBC World Service
American astronauts Mark and Scott Kelly are the only twins who have gone into space
Sanal Edamaruku put his life in danger debunking India's 'false miracles'
Boko Haram took my daughter; Indian auction brothers; Romania's sewer kids; elephant talk
How writer David Stuart MacLean lost his memory as a reaction to anti-malarial drugs
How hundreds of drug-addicted children seek refuge beneath the streets of Bucharest
The agony of a Nigerian father whose daughter was kidnapped by Boko Haram
John All filmed his struggle for survival after a serious fall in the Himalayas
Separated by war reunited by TV; Cycle superher; I sold a kidney; World Cup referee
British comedian Francesca Martinez has cerebral palsy, but refuses to let it define her