Our favourite autonomous underwater vehicle, Boaty McBoatface, has completed a two-month mission in which it explored a massive ice shelf in Antarctica’s southern Weddell Sea. Swimming nearly a kilometre beneath the surface, and with hardly any human assistance or oversight, Boaty spent over 50 hours directly beneath the Antarctic ice.
Last week, the Larsen C Ice Shelf gave birth to a trillion tonne baby, an iceberg now dubbed A68. The latest observations suggest this big berg has moved 3km from its starting point, and that it’s already starting to crack up.
Two years ago, a crack appeared on an ice shelf along a stretch of Antarctic coast. The fissure has grown substantially since then, raising concerns that it will break free and form an iceberg over twice the size of Manhattan.