These major climate shifts happened over a very long period of time, while this is happening very quickly. Scientists have come a long way in understanding the variables which affect the climate and these are not idle claims. It's you who look ridiculous by denying something that is becoming universally accepted.
Considering that last part is incorrect, your chastising of Padfoot looks ridiculous.
You need to read the whole sentence.
I did, which is why I replied the way I did. With the scientific community being split on the subject, it is not becoming universally accepted. Since they are still trying to figure out the variables involved and reexamining their historical calculations and estimates, they are far from coming to one conclusion or another. It's a whole new field, and they are doing their best to study and understand it.