Coronavirus: Has lockdown improved air quality?

Things have been quite different since we've been in lockdown.

With people staying at home more, government figures show that in Great Britain since social distancing rules started, there have been fewer vehicles on the roads and people have been using public transport less too.

So has this affected the quality of the air we breathe?

15-year-old Donald's been looking into it. He's done some research as part of a Crest Award - they're run by the British Science Association to get more young people into science, technology, engineering and maths.

Here's what he found out.