Saudi Arabia plans to spend $1 billion a year discovering treatments to slow aging

People living in the Gulf states ageing faster biologically than the rest of the world. Why? Consequently, they are suffering from diseases of affluence brought on by rich diets and too little exercise. Despite tech billionaires' unsuccessful attempts to delay the onset of ageing, with Saudi Arabia's future hanging in the balance, Antonio Regalado explains how the oil kingdom is about to try.