Puzzles

The unearthing of 2,000-year-old boards has given historians a new insight into an ancient game akin to chess that was played much earlier, by everyone from royals to commoners in society – before it seemingly vanished from society.

A new study out of Northwestern University has found the old advice of solving a problem by "sleeping on it" is not only true, but can be improved by using sound cues to manipulate our brain while we sleep.