An estimated 4.2 million premature deaths are associated with outdoor air pollution each year. And traffic emissions are one of the leading contributors, with those living within a quarter mile or so of a busy road at greatest risk. But statistics and facts will only get you so far.  To change perceptions and policy, the issue must be brought to a human level. And while our air quality has improved over the years, there is still work to be done, especially with communities most at risk. Learn more about the podcast at clearingtheair.org. Sign up for the Institute for Science & Policy’s mailing list. Follow us on Twitter, Facebook, LinkedIn, YouTube. If you like our work, consider making a tax-deductible donation.  The Institute for Science & Policy is a catalyst for thoughtful dialogue, working toward solutions on society’s greatest challenges with scientific thinking, empathy, and inclusivity. The Institute is a project of the Denver Museum of Nature & Science.  Episode Credits: Reporting, writing, hosting: Kristan Uhlenbrock Producing, marketing: Tricia Waddell Additional writing: Meredith Sell Additional reporting and fact-checking: Nicole Delaney and Kate Long Sound design: Seth Samuels with tracks from Epidemic Sounds Audio engineering: Jesse Boynton