Covid is airborne. Life is airborne. Most of all known life in the universe is in that thin blue line. Of the…

Covid is airborne. Life is airborne. Most of all known life in the universe is in that thin blue line. Of the roughly 7000km between the Earth’s centre and space, only about 20km is alive. In that thin blue line. Air quality is existential. https://t.co/8O7v5AguNg