Lol TED talks are a joke [0]. But depending on where one lives, better air quality may be inside or outside. The cleanest air I can breathe locally is in my grow room that is completely sealed except for a HEPA intake w/ same size exhaust that resupplies all new air per ~5 minutes, while I smoke my spliff, and it is very noticeable. I think I'm dumb for a lot of reasons but now I can add CO2 to the mix.
[0] https://www.youtube.com/watch?v=_ZBKX-6Gz6A