NO ONE has proved CO2 causes global warming. This is why I doubted that This was a Vatican Stand…
The question is not so much whether CO2 causes a greenhouse effect; it is a greenhouse gas. But if you compare the CO2 emissions from natural sources to that which is caused by anthropogenic sources, then you have a real question. (After all, the level of CO2 in the past was far, far higher than it is today. There weren’t even humans on the planet then)
And whether you compare the greenhouse effect caused by CO2, methane, and, primarily, water vapor (yes, water vapor) to other effects as far as climate change is concerned, that is another great question.
Of course, if the environmentalists got rid of people, they could avoid about 4,818,000,000,000 (yes, that’s 4 TRILLION) pounds of carbon emissions per year (each human is responsible for 1kg per day just from exhalation). Maybe that’s their real objective.
By the way, the
Pontifical Academy of Sciences has no magesterial authority. None. Zero. From their constitution:
The aim of the Pontifical Academy of Sciences is to promote the progress of the mathematical, physical and natural sciences and the study of epistemological problems related thereto.
That is not to say that they should be utterly disregarded. Their output should be considered the same as any other scientific body; but as far as teaching authority to which we are to assent, there is no obligation here.