Covid reminds me of asbestos. Hardly anybody showed ill effects from asbestos, when it was introduced as a…

Covid reminds me of asbestos. Hardly anybody showed ill effects from asbestos, when it was introduced as a wonder material. (My father was one, he died years later of the effects.) Airborne = maximum precaution. /1 #auspol #COVID19Aus @RealOzSAGE https://t.co/lZYo0mfvwR

Engineered benchtops and silicosis a current example. Who thought breathing in that dust would end well? (My gut feeling is that photocopier toner is a sleeper issue too.) This is where medical science meets standard WH&S. Lungs are for oxygen. /2 https://t.co/BT8vovHBXG

It’s not coincidental that our two current existential crises, the pandemic and climate change, both involve the air we breathe. All known life in the universe is in that tiny blue gaseous veneer at the surface of Earth. Let that sink in, when people talk about air quality. /3 https://t.co/wLjQzNZlMV

This isn’t a modern issue either. Air quality has been a trigger historically for major social change, in many countries. Rather than only seeing ventilation as a mitigation for Covid, we can see air quality itself as a marker of social breakdown. /4 https://t.co/EoNDDgoPTl

We swim in air. There’s a tonne of atmospheric pressure on every part of you, right now. Fish only know water exists when they’re beached, as the saying goes. We’re starting to understand that again, for air. /end