Baby elephant's flight in four-seater plane
Gary Roberts is a nurse and pilot from the US who works as a missionary in Chad.
When he came across a herd of elephants that had been killed by poachers, he attempted to rescue the sole survivor - a baby elephant he named Max - which he then flew home in his small lightweight plane.
Sadly, Max later died as a result of the ordeal he had endured.
Gary Roberts told BBC World Service Outlook's Matthew Bannister how he came to find Max, and their remarkable flight home.
Video courtesy of Gary Roberts