The Smithsonian Institute has been researching our climate and they have found the world to be far, far warmer in the past.
Source for picture pixabay -Thank you.
During warmer times there were lots of jungles all over the world. And little or no glaciers.
“Preliminary results released in 2019 showed warm temperatures dominating most of that time, with global temperatures repeatedly rising above 80°F and even 90°F—much too warm for ice sheets or perennial sea ice.”
“Modern human civilization, with its permanent agriculture and settlements, has developed over just the past 10,000 years or so. The period has generally been one of low temperatures and relative global (if not regional) climate stability. Compared to most of Earth’s history, today is unusually cold; we now live-in what geologists call an interglacial—a period between glaciations of an ice age.”