Can anyone explain SCIENTIFICALLY why global warming is caused by humans or nature?
Global warming doesn’t have to be caused by humans. It has happened many times in the past. At the end of the Permian Period 248 million years ago, due to heavy vulcanism over a period of several million years, the atmosphere had huge amounts of carbon dioxide and sulfur dioxide. It also happened before the end of the Cretaceous period 65 million years ago. This has occurred many times before in earth history. Each time it coincided with global warming and ultra-dry periods that lasted millions of years, and massive extinctions. In the end-Permian period, life almost ceased to exist on earth. The end Cretaceous warming killed off all the dinosaurs and allowed mammals to replace them. There is no doubt in anyone’s mind, with the exception of Ditto-heads, that the world is indeed warming. That can be measured. Glaciers are disappearing. Alaskan permafrost lines are moving northwards. These are facts. Why the earth is warming, scientists can only guess. But when you see a chart of carbon
