What Health Effects Does Beth Gardiner Tie to Air Pollution in Choked?

On Science Talk, journalist Beth Gardiner said air pollution kills seven million people a year. She was discussing her book Choked: Life and Breath in the Age of Air Pollution, after a BBC report that Delhi's monitors could not display a number that high. The harm is not only asthma. She listed heart attacks, strokes, and premature birth. Gardiner, who lives in London, had assumed the Clean Air Act and the old Los Angeles jokes meant the story was finished, and that climate was the crisis that mattered. Reporting on air quality before the 2012 London Olympics changed her mind. Scientific American added that Beijing is not close to the worst cities.