Models vs Observations: Study predicts Global Warming will Cause Deserts to Grow

Any casual student of antiquity and pre-antiquity will quickly find that there were periods when large parts of the Sahara desert were green. The ancient Egyptians hunted big game such as rhinos, elephants, and lions and they did not travel down to Subsahara Africa to do so. So did the Romans and it just so happens that the green times coincided with the warm periods the planet was always subjected to. Things we should look into. Greenhouse growers know more here.

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