Before Pope Francis speaks another word about global warming, he should familiarize himself with these two charts:
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![Human progress Human progress](https://cdn.mises.org/styles/max_1600/s3/2015-09-18-742b268e_large.png?itok=03Q8Thcn)
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![CO2 and temperature in the geological history of the earth CO2 and temperature in the geological history of the earth](https://cdn.mises.org/styles/max_1600/s3/2015-09-18-6a8c77ab_large.png?itok=e87zeOxd)
Before Pope Francis speaks another word about global warming, he should familiarize himself with these two charts: