So globull warming is claimed to have happened before, and it was baaaad. What caused it? People from Atlantis driving trucks and suvs, heating and cooling their homes, jet plane travel?
What caused the previous Roman or Medival warm periods, just to name two, that were warmer than today?
Is hoax is anti-science. If there was really threat, these folks would be last to understand it. And, money would be better spent adapting, exploring, doing real science.
Living in tiny, crowded urban apartments without powered transportation is not living, may be existing, but not living and that is what these nuts are seeking. Serfs crowded into dense urban centers consuming little of anything - little more than slaves to the elites.
certainly the Little Ice Age after the Medieval Warm was concurrent with low sun spot appearances. So the MW probably had a lot of them. If you have not read the whole article you have missed all the information about the intense volcanic activity in Siberia and the effects it probably had. Below you will find the very informative Wiki article on the Siberian Traps (a thick layer of basaltic rock spewed out by huge amount of volcanic activity, over thousands of years.
https://en.wikipedia.org/wiki/Siberian_Traps
At this link there is mention of extensive volcanic activity in Antarctica on the far side of the earth from Siberia. This suggest to me that a large meteor strike(s) in Siberia could have shocked Antarctica to a great extent. It seems that the Deccan Traps of India are about opposite the Yucatan strike that killed the dinosaurs. The Deccan is as much as 6,000 feet thick and covers an area several hundred miles across. A map at the link above suggests that the area of the Siberian Traps could be as large as half or more of the lower 48 states of the USA.