[Humboldtsnee]

Science is the pursuit of knowledge, and science therefore changes and new facts and tools and theories and methods are developed.

We are now much better at modeling than we were 50 years ago. Just like how the scientists of the 1970s were miles ahead of the scientists of the 1920s.

"Science got something wrong" is not a valid reason to discount it, because science necessarily gets things wrong. But it gets more right over time.

There's widespread consensus in scientific communities now, and there has been for decades - humans are warming the earth. How much? We're not sure, but it's absolutely demonstrable that we are.