Leftists always want more political power, so they can micro-manage people's lives.
That has been true for over 100 years.
To get more political power, they use a "crisis" to create fear.
Fear causes people to demand that their government 'do something now'.
The crisis could be real, and exaggerated, such as COVID-19, or imaginary, such as the coming climate emergency.
A fake crisis works just as well as a real crisis, if enough people believe in it.
Enough people have believed in a coming climate crisis for many decades, so leftists make use of it.
They ignore the mild, harmless global warming since the mid-1970s, and predict rapid, dangerous global warming in the future.
These scary 'coming climate crisis' predictions have been made since the late 1950s, starting with oceanographer Roger Revelle, back when scientists were calm, not hysterical, and had uncertainty.
Based on always wrong predictions of a coming climate crisis. leftists politicians declare the need for more government power to save the planet ... for the children.
That's quite a sales pitch -- even though it is completely false.
Leftist politicians declare major changes to the nation MUST be made quickly.
How about taking down a reliable electric grid, powered mainly by fossil fuels?
And, AT GREAT EXPENSE, replacing it with a less reliable electric grid, powered mainly by "renewables"?
And how about getting rid of internal combustion engine cars and trucks, and replacing them with shorter range electric (battery) vehicles, that can't be 'filled up' with fuel in 10 minutes or less?
So we will eventually have a less reliable electric grid, with a lot more demand for electricity to recharge cars and trucks.
Anyone with science, math or engineering skills would see the high costs, and many problems, just to get a less reliable electric grid.
Anyone with common sense would wonder why replacing a reliable electric grid, with an unreliable grid, would be done.
But people with politics skills, and those making money in the heavily subsidized alternative energy business, know this has nothing to do with math and science.
The leftist political strategy is to create fear, take charge, control people, and distract people from what they are doing with side issues, such as open borders and claims that all white American are racist (critical race theory).
And then leftists work to change everything with new laws, new regulations, and blind faith that "technology" will somehow solve all feasibility problems.
The time allowed for the 'transition' does not have to be reasonable -- and that is an advantage.
Fear can be ramped up by reporting: 'We are behind schedule, so need more laws and regulations, to save the planet'.
Scientists employed by the government are paid to claim we have just 10 (or 12, or 9) years left until a climate emergency, just like they have been predicting for over 60 years ... so far.
Unfortunately, there is no happy ending: Leftists eventually ruin everything they control !