Mathematicians Solve Decades-Old Spinning Needle Puzzle For a long time, the Kakeya conjecture, which involves rotating an infinitely narrow needle, kept mathematicians guessing—until now By Manon Bischoff edited by Daisy Yuhas Join Our Community of Science Lovers! It is rare to read about “spectacular progress” or a “once-in-a-century” result in mathematics. That’s for good reason:…