Dust
It gets everywhere - but what is it and where does it come from? Image: by Pattadis Walarput via Pixabay. Things mentioned in this podcast: - Where does all this dust come from? https://www.sciencedaily.com/releases/2009/10/091028114023.htm - Sand crisis https://www.businessinsider.com/world-running-out-sand-resources-concrete-2018-6?r=US&IR=T - Space dust https://www.universetoday.com/94392/getting-a-handle-on-how-much-cosmic-dust-hits-earth/ Find more Cognitive Engineering episodes here https://link.chtbl.com/SQeIgc44