I don’t know if global warming is real or a theory, but I do know that the U.S.A. has some of the best engineers in the world. I suggest the oil companies hire a top-rated engineering firm to build a small scale model of the earth/atmosphere and prove that CO2 is causing global warming.

Before anyone says this is too complicated, remember that NASA put a man on the moon in 1969, 54 years ago. Our engineers/scientists should be able to prove global warming in 2023.

Dave Petrozza

North Huntingdon

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