This story was originally published by National Observer and is reproduced here as part of the Climate Desk collaboration.
Ryan Kennedy had never been on a cruise ship until two years ago when he embarked on four North American cruises armed with a P-TRAK Ultrafine Particle Counter. This device is a portable digital contraption. It measures minute particles of air pollution that, when inhaled, can cause harm to your heart and lungs.
Kennedy, an assistant professor at the Johns Hopkins University Bloomberg School of Public Health, is the author of a new study, released Thursday, which details the findings of a two-year study exposing poor air quality on four Carnival Corporation ships — the largest cruise operator in the world — including one that left Vancouver for Los Angeles in October 2018.
The report, titled “An investigation of air pollution on the decks of four cruise ships,” found that air pollution on these ships was significantly worse than some of the world’s most polluted cities like Beijing, China or Santiago, Chile.
Kennedy measured air pollution every second for one minute and created an average for each minute for 20 minutes at ti... Read more