President Trump says he wants Greenland for national security.
But at least one Trump official has said it's also about critical minerals.
Geologist Greg Barnes knows these minerals well.
I just couldn't believe that something of this size and quality was ever sitting out there.
On the indicator from Planet Money, is this really a land of untapped natural riches?
Listen on the NPR app or wherever you get your podcasts.
Live from NPR News in Washington, I'm Windsor Johnston.
More than 200 million Americans are on the path of a powerful winter storm.
NPR's Camilla Dominovsky reports the system is expected to bring snow,
ice and dangerous cold to a large part of the country this weekend,
putting stress on the nation's power grid.
More than 40% of the nation's electricity comes from burning natural gas.
And during extreme cold snaps, natural gas production and transportation can both be disrupted,
right as demand for the fuel spikes.
Power plants can be shut down by cold, too.
Karen Panetta of IEEE, the Institute of Electrical and Electronics Engineers,
also says that ice on power lines combined with high winds and falling branches create a,
quote, perfect storm ripe for an outage.
Utilities in the storm's path have been trying to prepare by trimming trees and positioning teams of workers to respond to downlines.
Camila Dominozki, NPR News.