The polio survivor, Paul Alexander, lived inside an iron lung for 70 years. He died at the age of 78 and contracted polio in 1952 when he was six, leaving him paralysed from the neck down. But, what is an iron lung and how does it work?​

Drivers in California are no strangers to pain at the pump. The state is home to some of the highest gas prices in the United States. There are several factors that go into what drivers pay at the pump, including refining costs, distribution and marketing, taxes and crude oil prices. High taxes are partly to blame for the high price of gas in California. But, there’s more to the story. Here’s what’s driving gas prices higher and what drivers can do about it.