Lessons from the past

摘要

Hurricanes churning up the oceans could provide an elegant, albeit speculative, explanation for one of the most striking mysteries in Earth's climate history. During the Eocene, some 50 million years ago, the planet was much warmer than it is today. Sediments pulled from the bottom of the Arctic Ocean suggest that the North Pole enjoyed an almost Mediterranean climate, with summer temperatures as warm as 24℃(ref.10).