Nanogirl puts COVID-19 classroom ventilation theories to the test

We’re told that the best way to reduce COVID-19 airborne transmission indoors is to simply open the windows - but does it work?
Is it still practical when it’s cold outside?
Would air purifiers be a better solution to keep us safe?
We took over a New Zealand school and put these questions to the test ‘Nanogirl-style’ - big experiments, and lots of fun!! Check it out in the video below.
To read more from the Ministry Of Education about Ventilation in Schools visit: www.education....
References:
www.tandfonlin...
www.medrxiv.or...
royalsocietypu...
temahau.govt.n...
www.jyi.org/20...