The radical intervention that might save the “doomsday” glacier

What happens if it breaks off into the ocean? The future of our planet is in the metaphorical hands of the Thwaites Glacier, a mass of ice in Western Antarctica, that could trigger the flooding of coastal cities around the world, threatening millions of lives. James Temple explores the latest preventative technology, including massive berms and underwater curtains, that could preserve crucial ice sheets for centuries, that could buy us crucial time to stabilise the climate.