Spooked by fear and subject to panic
Those who want a reason to stop people wasting fossil fuel resources (a fair concern) will have to find a new driver for their misplaced concreteness because correlation is not causation in the 3 cases , with the science for the above simplicities " still missing" . (Professor Ian Plimers own words ) The dark stuff is water condensation, as it does naturally in clouds. What we see here is not smoke but a natural product of combustion. The public know that burning produces heat in their car and turbine engines . What they don't know and can't see (the bigger picture) is that the external effect of combustion and higher humidity near the outlet is more water condensation and more clouds to reduce the heating effect on the air. No need to fear or worry. Let me add a summary that comes from decades of effective study and practice of earth science - which you can follow here OR, if you prefer some other professor who is also qualified to be listened to, Summary &q