Antarctica’s glaciers to flow out to sea faster, it’s not good news: when this happens, the frozen giants lose more and more ice, which, when it melts, raises the sea level. But how quickly this takes place [...] doesn’t just depend on rising temperatures; the bed below the ice also plays a critical role. After all, while some types of terrain can slow ice loss, others can accelerate it. Until recently, however, not [...] not enough was known about the topography below the ice to gauge these risks. A new map, which experts from the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI), contributed