How to build strong magnets without rare-earth metals
THE HUMBLE magnet may not seem to belong alongside steel, microchips and oil as a chess piece in the great diplomatic game. But on April 4th, as part of its retaliation against America’s tariffs, China announced export restrictions on a particularly useful kind of magnet—the powerful permanent sort that can be made with “rare-earth” metals.
Already have an account?Log in
Continue with a free trial
Get full access to our independent journalism for free
Or create a free account to unlock just this article
readers loved this