Temperatures and climate are cyclical. Technically, we are still in an ice age. Warming should be expected, though temperatures have leveled off since around the turn of the century. Question is, is it anthropomorphic? Man has some influence, but how much?
Mars experienced warming on a similar scale in the 90’s. The Romans grew grapes and made wine in England. Erik the Red named Greenland, “Greenland”, because it was green.
The cycles of the sun have more to do with the average temperatures on earth than anything else.
