Have you ever wondered what would happen if coastal cities around the world vanished beneath the waves? It's a chilling thought, but the melting of the West Antarctic Ice Sheet could put that nightmare scenario within reach. Scientists have just uncovered a troubling cycle that's accelerating the Antarctica ice melting even faster than we thought, threatening a future where our coastlines are redrawn forever. The vicious cycle Ice shelves are vast, floating extensions of the glaciers and ice sheets that cover Antarctica. These immense structures act like...