Greenland

The reaction among America's allies was summed up by the speech of Canadian Prime Minister Mark Carney, who said "the middle powers must act together because if we're not at the table, we're on the menu."

President Trump announced new tariffs on European nations if they stand in the way of the U.S. acquiring Greenland. The EU could hit back relatively quickly.

From the end of November, large planes will be able to land at Nuuk for the first time, thanks to a new, longer runway and a sleek new terminal building.

As icebergs melt, fishing with sled dogs on sturdy winter glaciers is no longer safe. But the retreating ice also means bigger catches of fish.

Unmitigated climate change could shave more than 10% off U.S. annual GDP by the end of the century.

Greenland might not be for sale, but it is open for business. And that could mean a boom for its mining industry.