Wrong.
High-level associations in the Church of Rome have "said" just that: humans cause global warming.
Examples from the Vatican website (which, BTW, has an excellent search engine):
Since the tsunami that struck the Indian Ocean on 26 December 2004 there have been other natural disasters in different parts of the world. Hurricanes, earthquakes, typhoons and droughts are attributed to global warming, a phenomenon, due not just to natural causes, but also to human behaviours. In that sense human beings are responsible for global warming and their continued disregard for the environment will prove ever more fatal for human existence, unless the causes are addressed. Human beings are part of a larger whole. They should not manipulate, distort and abuse God's creation. Rather they are called to be responsible stewards, able and willing to restrain their own desires for the good of all in God's creation.
H. Em. CARDINAL PAUL POUPARD, PONTIFICAL COUNCIL FOR INTERRELIGIOUS DIALOGUE
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Today however the world is confronted with a serious ecological crisis. The earth is suffering from global warming as a result of our excessive consumption of energy. The extent of forested area on our planet has diminished by 50% over the last 40 years while the deserts are spreading ever faster. Three quarters of ocean life has already disappeared. Every day more than 100 living species die out and this loss of biodiversity is a serious menace for humanity itself. With the apostle Paul we can affirm: creation has been delivered into the power of destruction, it groans as in the pains of childbirth.
Please, you found one of the most liberal flakes (and flaky “councils”) in the Church to quote. Selective digging can turn up just about anything.
I’m talking about general policy, which has always been pro-human growth and development. Naturally, the Catholic view has always been that man is supposed to be a steward of Creation, the gardener of the Garden, so to speak, but there are many ways to do this, many legitimate approaches and opinions, and none of them involves ZPG (zero population growth).