Interview with Professor William Happer of Princeton University. Mr. Happer is a renowned physicist, specialized in the field of atomic physics, adaptive optics and spectrometry. This interview from 2015 is part of the series "Conversations that Matter."
Some quotes from this interview:
04:55 - "There is very little evidence that humans are making much impact [on the climate] and as far as CO2 is concerned witch is the major focus, that's probably more good than bad."
05:24 - "I know a lot about CO2 compared to most climate scientists because we make CO2 lasers. CO2 is a very interesting molecule, in particular, the model of CO2 that contributes to global warming. CO2 is a rod and it bends up and down, up and down and it's that bending motion that causes global warming. But that is such a strong absorption that's it's saturated now so if you add more CO2 most of what you can do has already been done, there's still a little addition but not very much."
"If you have a barn and you want to paint it red, you know when you paint it once it may not be red enough if you paint it two or three times then it really looks red, after that if you add more red it doesn't make much difference. And that's sort of what CO2 is doing now, most of the easy absorption has been done and so if you add more CO2 you get a little broadening but I don't want to get too technical."
07:20 - remarks on the logarithmic scale of CO2 induced warming.
08:50 - CO2 is food for plants
10:30 - "We're in a CO2 famine, we have too little CO2."
11:00 - CO2 was measured in thousands of parts per million, not hundreds. "Plants have envolved when there was a lot of CO2 to eat, now they don't have enough."
12:20 - There is no "social cost of carbon. The social cost is negative (...) it's a net contributor to agricultural productivity."
14:30 - There is no downside to CO2. This initial argument against CO2 was that there were to be a rapid global warming. It hasn't happened. It's clear that the models have enormously exaggerated it's warming potential.
15:00 - "I mentioned the saturation of CO2 (...) They noticed early on that CO2 has this 'problem', it was disappointing that it didn't make much difference so they invented all sorts of feedback mechanisms that would amplify the effect of additional CO2. Water vapor, clouds, all sorts of things were supposed to be triggered by this CO2. They don't seem to be happening.
15:30 - Water vapor is the main greenhouse gas. Water vapor and clouds.
15:50 - "The most honest modelers try to include clouds, but that's very primitive. Rough estimates. Nothing more."
17:50 - "Antarctic ice is probably growing (...) that's not supposed to happen according to the models, but it is happening."
18:40 - The Arctic is an ocean, the situation is completely different than at the South Pole. The Arctic ice is determined by ocean currents and not the air temperature.
21:00 - Climate models are group-think. They never looked at the world, they looked at other models and they say "look how good we are we're all getting the same answers, that must be right." They adjusted the parameters to get the same answers.
22:00 - "I don't think there's anything to worry about from more CO2. I think more CO2 to be good for the world. Our great-great-grandchildren will look back and say; 'Thank God we have all this CO2, what foresighted people our ancestors were.'"
22:30 - "Environalism should be looking at things that make a difference. Cleaning up real things that make a difference."
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