全球气候变暖，南北极的冰川正在加速融化。今年7月，北极圈的温度一度飙升至32.5摄氏度。覆盖世界第一大岛格陵兰岛的冰盖也在加速融化。北极地区的科学家们甚至穿着短袖短裤打起了冰上排球。据悉，格陵兰岛大部分位于北极圈内，全岛约80%的土地被冰盖覆盖。如果高温等气候变化负面影响持续，格陵兰冰盖全部融化，全球海平面将上升7.5米。仅仅在7月15日至7月17日期间，格陵兰岛的融冰量每天都有60亿吨，意味着这两天时间就融化了120亿吨，足以能够填满720万个奥运会游泳池。那么试想一下，如果全球的冰都融化了，又会怎么样呢？
What if a dramatic surge of climate change melted all the Earth's ice overnight?
Would you wake up to find yourself drowning under water?
Would most of your country be submerged?
How would you enjoy slowly choking to death?
This is What If.
And here's what would happen if all the world's ice melted.
Ever watched an ice cube melt in a glass of water that's filled to the brim?
How does it change the water level?
The truth is, it doesn't.
Above or below the water line, a melted ice cube replaces exactly the same volume of water.
