The Morning After: Let's talk about Air Quality

Wildfires in Canada have led to a surge in air pollution levels in the US, with New York currently having the worst air quality of any major city. There are plenty of images of N95-mask-wearing people walking down smog-blighted streets that wouldn't look out of place in many a dystopia. Many states and cities have urged folks to stay inside unless they absolutely need to leave, and they're pumping out as much Air Quality Index data as they can. But do you actually know what the Air Quality Index is, or what it's for? We've done an AQI deep dive, exploring how it works and how you can keep yourself informed and safe. And, on the subject of being safe, we've also knocked up a guide for how to make a quick-and-dirty box fan air filter.