The science is clear and undeniable. It's simple physics. CO2 traps heat.

https://climate.nasa.gov/system/charts/15_co2_left_061720.gi...

If you can look at this chart and not understand why man-made climate change is a real phenomenon I'm not sure what to say.

FUD about whether some scientist 40 years ago understood this or not is completely irrelevant. You don't need to "trust" anyone to understand this. It's incredibly simple.

Forty years is a fuck load of climate science. You're familiar with how science works right? New data often leads to a better understanding of the world and an increased ability to predict the future.

The year 2000 called and wants its climate denialism trolling points back. Have you not seen the memo, now it's all about adaptation and impact minimisation now.