What is the iron lung and how does it work?
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
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