Why would someone push an agenda that is wrong? Lots of reasons that most of us are familiar with: ignorance, their parents did it, being reactionary, people like to feel they are part of a bigger group (there is strength in numbers, and strength is comforting), misguided principles, etc., etc. But things like ignorance can be cured, IF the ignorant person doesn’t have a significant vested interest in maintaining their current belief.
A related but different question: why would someone push something they know is wrong? Usually, it’s because they profit from it personally in some way, via research grants, accumulation of political power, they own the “alternatives” being pushed, it is a structural part of a larger belief system, or whatever.
Most global warmists / climate-change pushers can get binned into “profit from it” or the “scaring people is good for pushing more / larger government controls and regulations” view. You know the type. So here are a couple of very short, simple things about it all.
Cause MUST come before EFFECT. This isn’t even scientific method 101, this is toddler-learning-about-gravity level stuff. And if you graph CO2 and temperature, temperature change leads CO2 change. Ergo, CO2 CANNOT be driving temperature.
OK, a warmest replies, then what alternatives are there? Answer: The sun.
But, they say, the sun is constant. Ahem. No, it is NOT.
So how does it change that we can test or measure, the smarter ones counter, what’s the mechanism; it’s 93,000,000 miles away? (yes, yes, I know – it’s a darn small percentage of them that goes here, but let’s go there anyway).
Answer: Sun-spots. Sunspots, they reply, you must be joking.
Nope. Sunspots are indicative of magnetic field activity. The stronger the sun’s magnetic field, the more Galactic Cosmic Rays it deflects from Earth. You see, GCR passing through the Earth’s atmosphere interact with it in a way and at a rate that they act to seed cloud nuclei. Clouds are white and reflective. So:
Lots of sunspots -> few GCR -> less cloud cover -> lower albedo, -> more energy absorbed from the sun -> planet warms.
Few sunspots -> more GCR -> more cloud cover -> higher albedo, -> less energy absorbed from the sun -> planet cools.
In the 400+ years of actual sunspot observation, the correlation between long-term sunspot patterns and climate is well established. Now we know HOW. We’ve tested it in the lab. (Svensmark at CERN) And hey, what do you know – 700 million years ago, the sun was in a part of the Milkey Way that had much higher levels of GCRs – and it was an ice-ball, pole to pole.