The C3 plants on our planet, often used for food, evolved in an atmosphere of about 1000 ppm CO2 -- that's why they grow so much better inside greenhouses with CO2 enrichment to about 1000 ppm CO2.
The climate alarmists would have us believe adding CO2 to the atmosphere causes a water vapor positive feedback effect that triples the assumed warming from CO2 alone.
That positive feedback is an unproven claim -- foolish actually -- but it magically triples the expected warming effect from CO2 alone, changing CO2 from harmless, to a problem.
I say such a positive feedback is foolish because there is no evidence of it in temperature measurements.
And if a positive feedback really existed, all life on our planet would have ended long ago, when CO2 levels were up to seven times higher than today, from runaway global warming.
The plain truth about climate history is that no warming trend or cooling trend was ever permanent.
And there's no reason to assert that the current warming trend is permanent.
In fact, after 45 years of global warming since the 1970s, it would be correct to say ACTUAL global warming has been pleasant, improving our climate ... and please give us more.
Warmer winter nights in Siberia and Alaska since the 1970s are the biggest changes from 45 years of warming.
They are great news, not a climate emergency !
The greening of our planet since the 1970s is great news, not a climate emergency.
The coming climate crisis, predicted in each year for the past 50 years, is the biggest scientific hoax in history ... predicting climate doom for 50 years in a row, as the actual climate gets better and better.
The
coming climate crisis is a fairy tale for gullible people and
leftists (I repeat myself) whose main goal is to frighten people, get
people to demand their government DO SOMETHING and then the leftists get
what they have wanted for over 100 years -- they get to lead VERY
powerful governments, micro-managing our lives.
Leftists never let a crisis go to waste -- sometimes they invent a fake crisis (climate crisis) to gain power.
The coming climate crisis is a fake crisis used by leftist politicians to gain power.
=The actual climate change is beneficial, not a crisis.
And we have 45 years living with harmless global warming to know that !