claim: Scientists predicted global cooling and were wrong, so they are wrong about global warming
evidence: Some climate scientists in the 1970’s were concerned about the cooling effect of atmospheric aerosols and explored the hypothesis that it might lead to a cooling of the Earth. However, the majority of scientists at that time were actually forecasting global warming for the future. In fact, scientists have warned that elevated greenhouse gasses would cause global warming since the 19th century. Overwhelming observational evidence has resulted in the scientific consensus that global warming is real and human activities, primarily through the emissions of greenhouse gasses, is the main driver.