The encyclical letter Laudato Si is available here on the Vatican website.
171. The strategy of buying and selling “carbon credits” can lead to a new form of speculation which would not help reduce the emission of polluting gases worldwide. This system seems to provide a quick and easy solution under the guise of a certain commitment to the environment, but in no way does it allow for the radical change which present circumstances require. Rather, it may simply become a ploy which permits maintaining the excessive consumption of some countries and sectors.
This statement got noticed. Perhaps one can’t always be permitted to buy one’s way out of trouble.
Catholic Sensibility 
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