How to Stop Sea Level Rise Politics / By Gwynne Dyer.........Ninety percent of ice flowing to the sea from the Antarctic ice sheet, and about half of that lost from Greenland, travels in narrow, fast ice streams measuring tens of kilometres or less across. Stemming the largest flows would allow the ice sheets to thicken, slowing or even reversing their contribution to sea-level rise.” John Moore, a British glaciologist holding dual appointments at Lapland and Beijing Normal universities, had a big idea a few years. The big ice-streams are moving faster and faster because the oceans are warming, and warm currents are eating away at the underside of those glaciers where they meet the ocean. So stop them. The warm currents are deep, because salty seawater is denser than the fresh water coming off the glaciers. When they melt the lowest part of the ice-stream where it meets the ocean the glaciers loses contact with the underlying rock, and the friction with the rock was what slows them down. They can speed up three, five even ten times faster. However, the problem is smaller than it seems. Greenland and Antarctica, where the ice is up to two kilometres deep, have about 70,000 kilometres of coastline, but the total length where the ice-streams reach the sea is only 200 km. or less. Stop the accelerated melt there, and the human race might win an extra century or two to cope with all the other challenges posed by global warming without having to wage a continuous struggle to protect itself from rapidly rising sea levels at the same time. https://gwynnedyer.com/2022/how-to-stop-sea-level-rise/