However it appears relatively easy for scientists to come up with all sorts of doomsday predictions about all sorts of topics. If you objectively look at most of these predictions, they very rarely turn out as predicted. There seems to be an inbuilt bias to lean towards the worst case end of the spectrum.
What it absolutely clear in my mind, and totally supported by evidence in the Geological record, ice core data etc. is that the Earth has moved through many warming and cooling phases throughout it's past, absolutely none of which was the result of human activity.
In fact, it is "normal" for the Earth to be a lot cooler than it is now, interspersed with brief (in Geological terms) warm periods, of which we happen to be in one currently.
So on the balance of probability and previous history, I will require very convincing proof that the relatively short period of warming we have experienced in the past 150 years or so is anything other than normal climate change.
If/when the Western Antarctic Ice sheet dislodges it will of course create an absolute catastrophe.
If/when the Earth is hit by an asteriod greater than 10km in size it will create an absolute catastrophe.
If/when the Yellowstone Park caldera blows it's top it will create an absolute catastrophe.
If/when the La Palma (Canary islands) volcano lets go, sending 50m tsunami into the Atlantic it will create an absolute catastrophe.
If/when the next worldwide Pandemic virus sweeps the world it will be an absolute catastrophe.
If/when the next Magnetic Field reversal takes place it will be an absolute catastrophe.
