SO WHAT IF THE ARCTIC OCEAN MELTS?
The sea ice in the Arctic Ocean is approaching its annual nadir. By early September each year about two thirds of the ice cap has melted, then the sea begins to freeze again.
This year looks unlikely to set a record for melting, with more than four million square kilometers of ice remaining, less than the average in the 1980s and 1990s, but more than in the record low years of 2007 and 2012. (The amount of sea ice around Antarctica has been increasing in recent years, contrary to predictions.)
Meanwhile, the habit of some scientists of predicting when the ice will disappear completely keeps getting them into trouble. But would it matter if it did all melt one year? Here’s the point everybody seems to be missing: the Arctic Ocean’s ice has indeed disappeared during summer in the past, routinely.
And when it did, during a period known as the “Early Holocene Insolation Maximum” (EHIM), it was the best thing that ever happened to humanity. Here’s why.











