Good news: An end is in sight for the COVID-19 pandemic. Bad news: Nitrogen dioxide pollution is on the up as life returns to normal

Say goodbye to the lovely cleaner air we've been breathing for a year

The COVID-19 pandemic has passed the one-year mark, and as vaccines roll out, there is light at the end of this long, dark tunnel. Here's something to dampen the spirits, though: global air pollution levels are rising, thanks to increased human activity....