“He shouldn't be alive,” doctors said as six-year-old polio-stricken Paul Alexander lay flat inside his seven foot long ventilator – nicknamed his iron lung. Paul, 78, from Dallas, Texas ...

The polio survivor, Paul Alexander, lived inside an iron lung for 70 years. But what is an iron lung and how does it work. Video by Sanjana Bhambhani How a monument to a late dictator has been ...