Two mathematicians have proved that a straightforward question—how hard is it to untie a knot?—has a complicated answer.
The world of conservative punditry, normally an unflappable and predictable arena with disagreements leaning toward petty, ...
NPR's Scott Simon talks to John Hogan, professor of applied mathematics at the University of Bristol, about his research on the "Golfer's Curse" - when a ball looks like it's been sunk, but spins back ...