“Hugget” Pillow. The now-famous weighted knot design claims to stimulate serotonin production, reduce cortisol, and boost melatonin, helping you fall (and stay) asleep longer. Sounds goo ...

Half a century ago, a brilliant young mathematician named John Horton Conway discovered, of all things, a knot. This wasn’t the sort of knot that you’d be likely to encounter in the real world. You ...