A new book uncovers the lost art of letterlocking, the ingenious folding and sealing techniques used by everyone from Queen Elizabeth I to Emily Dickinson to keep messages safe from prying eyes.

The DC Universe is full of amazing teams that haven't been adapted in live action yet, ripe for the pickings for James Gunn ...

The Laboratory in Blue Prince is home to two puzzles: the periodic table puzzle and the machine puzzle. Both puzzles are ...