Correction on Nov 08, 2018
An earlier version of this story stated that Tony Cox has no medical training. Although he has no medical degree, he applies his risk analyses to health issues. He also helped a tobacco company research “how” smoking causes lung diseases, not “whether” it does. We also added why he told a conference audience that there is no link between air pollution and asthma and heart attacks – because his work suggests other factors could be involved.