Is there any institution in Man's history that has a sorrier track record than the Catholic Church? If you are wrong about virtually everything for almost 2,000 years, at what point do the true believers begin to get suspicious?
At one point, they would have burned you at the stake for daring to claim that the earth was not the center of the solar system. Now, we must not do research on stem cells or contribute to global warming (uh, excuse me, "climate change").
By my reckoning, burning humans at the stake would result in a massive release of carbon so perhaps the Pope should do some calculations on how much he and the other voices of God have contributed to the problem over the years before admonishing His subjects.