re: #19 Obdicut

Yeah. You can see from this video how that goes for the US, and extrapolate from that. I don’t know if he’s done one for the full globe.

[Video]

This - and the others - need to be seen by anyone who thinks that “it is arrogant to suppose that humans could be responsible for changes to the earth on a global scale”. Mans direct influence on atmospheric composition is utterly undeniable as these videos show.