The Yangtze River Bridge in Nanjing is one of the most famous bridges in China. It is also the most popular place in the world to commit suicide. For the past 11 years Chen Si has been patrolling this bridge, looking to provide aid for those who've gone there to end their lives. Incredibly, he has saved over 300 people since he began - nearly one every two weeks.

Angel of Nanjing

Henry Long desperately seeks a cure for the condition that leaves him unable to feel physical pain.