Temperate Rain Forest At South Pole

Scientists say the South Pole was a rain forest with high carbon dioxide levels. Since the South Pole is currently covered with snow and ice, maybe the Earth is in a period of cooling and normal would be a South Pole with trees, as it was in the past. Maybe planets go through various cycles of cooling and warming, much like seasonal cycles and daily cycles.


The following was published in the journal Nature about a warm South Pole.

Temperate rainforests near the South Pole during peak Cretaceous warmth

The mid-Cretaceous period was one of the warmest intervals of the past 140 million years^1,2,3,4,5, driven by atmospheric carbon dioxide levels of around 1,000 parts per million by volume. ... Here we use a sedimentary sequence recovered from the West Antarctic shelf—the southernmost Cretaceous record reported so far—and show that a temperate lowland rainforest environment existed at a palaeolatitude of about 82° S during the Turonian–Santonian age (92 to 83 million years ago).