Bioaerosols are a problem but they're a known unknown. We haven't yet characterised them well and we don't know how much of a problem they are. But we do now have some amazing tools to figure it out. This is the last of 3 videos commissioned by The Eden Project with funding from The Natural Environment Research Council. You can buy my books here: https://stevemould.com/books You can support me on Patreon here: https://www.patreon.com/stevemould just like these amazing people: Glenn Watson Peter Turner Joël van der Loo Matthew Cocke Mark Brouwer Deneb Twitter: http://twitter.com/moulds Instagram: https://www.instagram.com/stevemouldscience/ Facebook: https://www.facebook.com/stevemouldscience/ Buy nerdy maths things: http://mathsgear.co.uk/