She and several Popes have mentioned how we need to protect the environment - all get away from the purpose of their religion which should be to spread the Word and the Good News of the Gospels because of Jesus Christ.
The Bible certainly tells us not to pollute his earth.
“Global warming” is junk science. CO2 isn’t pollution. Neither is NO2, or any of that other inert crap. I think we can all agree pollution causes direct, measurable harm to plants, animals, and humans.
If they want to speak out against Biblical pollution, perhaps they should discuss the radioactive sludge oozing out of Fukushima, or the toxic fumes coming out of D.C.