Magnets and Rare Earths(robodienst.com)
17 points by Bluestein | 2 comments
Robodienst interactive learning path explaining NdFeB magnets in robot joint motors, rare earth supply chains, China's dominance, and export controls.
robodienst.com on Hacker News
1 story on the front page, newest first. Scroll down to watch the site change over time.