By Frida Bengtsson
All life on Earth comes from the oceans… and they’re still looking after us today.The oceans have protected us from the worst impacts of global warming. Our oceans have trapped 90% of the extra heat caused by greenhouse gas emissions over the last sixty years. 20,000 years ago the world was just over 4°C colder on average than today, and a large part of North America was buried kilometres-deep in ice. Without the oceans absorbing the man-made heat of the past half century, we would have seen the Earth warm by an average of 36°C. Even disaster movies haven’t considered anything this devastating.