The iron lung was an invention created to treat sever polio cases in the year 1927. Recently, Paul Alexander, the last known man to be using the iron lung died on March 11th. Social media and the internet are filled with his videos and people are fascinated by the iron lung machine. The iron lung requires the patient to slide into it up till their necks, so that they can eat and talk. The machine uses negative pressure to pass air through the lungs so that the patient is able to breathe and doct