Air pollution is a growing global issue, that is detrimental to human health and the environment. Major sources of air pollution include manufacturing, power and transport. Some of the major health effects of air pollution are lung and heart diseases. Read more on what air pollution is, global air pollution trends and more here.
Have you have ever wondered about the effects of Delhi’s air on people who work outdoors? How about Delhi’s traffic police? We sure have at Smart Air, and we have been waiting for research to catch up with our ruminations. A study on Delhi’s traffic police officers, published in January 2017, finally …
It’s tough to get good mask data on a wide range of consumer masks. I’ve posted some of my own test data and test data from Dr. Saint Cyr. But another great source of even more mask tests comes from the Shanghai Municipal Bureau of Quality and Technical Supervision. I’ve linked to …
As always, I’m making the raw data and more details on the testing method publicly available, including humidity data. Should we subtract the 10 micron particles? One reasonable question is, should we take into account the 10 micron particles? Remember the standard Dylos gives readings for 1 micron and 10 …
Another year, another winter. As winter arrives in Beijing and soon in Shanghai, I got to wondering: how much worse is winter air in Beijing? To get to the bottom of it, I analyzed the last eight years of US Embassy PM 2.5 data for Beijing and Shanghai. I found …
The World Bank released a new report titled “The Cost of Air Pollution: strengthening the economic case for action” which talks about the consequences of air pollution and in it, they detail how air pollution is now the 4th leading risk factor for deaths worldwide. That’s worse than the deaths …
Map of today’s pollution levels across China – 9th September 2016. Source：http://aqicn.org What a glorious day in Beijing! Right now, the US Embassy in Beijing is giving a PM2.5 value of 0. Is summer normally this good? And what’s the pollution like in other parts of China right now? (Short answer: …
Air pollution can be confusing. As a topic, it’s often not well understood or well-reported about. That means separating fact from fiction can often be hard to do. In some cases, it is difficult to distinguish research-backed facts and findings from common misconceptions–misconceptions that sometimes even get repeated in the …
Summer is here, bringing with it clearer skies and certainly cleaner air. Right? Summer always seems to drive out the dense clouds of pollution that suffocate many Indian cities. However, while summer air is in fact cleaner than air during other seasons, it’s still far from safe according to the …
In the main text, I presented a simple formula. However, if I try to more precisely fit a formula, the regression spits out the following: PM2.5 µg/m³ = Dylos 1 micron count x .023 – 5.309. We can judge the complicated and simplified formulas by calculating how much they differ …
Since mask fit-test machines cost $10,000, many people need a simpler, practical way to check that their mask is sealing properly on their face. This simple four-step “poor man’s fit test” will help people check the fit of their mask and find leaks. I was fortunate enough to visit 3M’s …
