My comments on the Sabine video. I am just commenting what I understand at present without going back to research and justify each statement.
1 the way CO2 absorbs infrared has been known for well over 100 years. It might or might not be significant in the atmosphere. The arguments against it include atmospheric layering (no glass in the greenhouse walls) and the overwhelming effect of moisture and clouds.
2 Atmospheric CO2 has been increasing since measurements began (since 1982). But we don't know how variable and cyclic it is over longer periods. Ice cores show that it increases after warming, therefore is an effect of warming, and not a cause.
3 Oceans becoming less alkaline (not more acidic!) can be due to volcanic activity which is largely unquantified and much greater than "climate scientists" acknowledge.
4 The additional CO2 in the atmosphere may be from fossil fuels, the isotopic ratio is not proof yet. It can also be from land clearing, volcanism etc.
5 Stratospheric cooling must be considered in relation to the clouds and moisture problem at lower levels.
All of my statements can be backed up by scientific papers. There is a lot of debate about them all. It is prudent to say that we don't have the answers at present, that the science is far from settled. The greatest risk to humanity is that we condemn later generations to a world without adequate energy supplies, destroying our industrial capacity and standard of living. Of course this will not happen globally, but at present Australia is out there on its own destroying its infrastructure without having put a substitute in place.