45-million-year-old extinct species of walnut discovered on remote Arctic island
(www.sott.net)https://www.sott.net/article/494744-45-million-year-old-extinct-species-of-walnut-discovered-on-remote-Arctic-islandIf you looked back 45 million years ago to the middle Eocene, the Earth's poles would be unrecognizable. At the time, Antarctica and the Arctic Circle were warm and blanketed with forests, in stark contrast to the freezing deserts that we associate with the region today.