Yes, this is what power plants look like in reality.
No, this is what power plants look like in reality.
Those are nuclear steam vents. These are some form of coal, wood, or oil burning plant' emissions
Scientists make a lot more money by working for big polluting companies. There's no good reason to think almost all of them are trying to trick us. Humans (like all life forms) have a big effect on their surroundings. The reason to change that is not for nature, it does not care. We should care because we humans have build our civilization on the way nature is, if that changes we suffer.