冰川融化引发极端洪水,快速侵蚀使断层松动,导致地震和大规模海啸。随着北美下沉,科学家们正在争分夺秒地建造污水坑,以平衡水位。Extreme flooding is brought on by melting glaciers, and rapid erosion loosens faults, resulting in earthquakes and massive tsunamis. Scientists are racing against time to create sinkholes to balance the water as North America sinks.