26 May

Posted about this a few weeks ago. The massive melt in Antarctica is creating enormous icebergs, that when melted then slow deep ocean currents. Those currents transport food and heat throughout the world’s oceans. To give a sense of the scale here, one of these icebergs is 650 cubic kilometres. That’s 650 cubes of ice, 1km long by 1km wide by 1km high. And that’s just one of many. Over 3 trillion tonnes of fresh water has been melted into the ocean in the past few decades. Those currents are also a main way that heat is transferred around the globe, without that circulation the Earth could enter another massive ice age, which would cover continents with ice a km or more thick. So paradoxically global warming causes ice melting, which might then cause the lot to freeze over. Nothing much survives that.