Mental Floss

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A scene from 'The Bride Of Frankenstein' (1935).

From 'Casablanca' to 'The Bride of Frankenstein,' these are the movie posters collectors are willing to spend hundreds of thousands of dollars to own.

Michele Debczak








We can thank Shakespeare for popularizing it, sort of.

Contrary to popular belief, Shakespeare wasn’t the one who invented this common idiom. But trying to unravel its origins will land you in a bit of a tricky situation.

Mike Rampton












Tibetan prayer flags wave in the Himalayas.

Mount Everest’s bitter temperatures, unpredictable weather, icy terrain, and lack of oxygen make climbing it so difficult, in fact, that many don’t survive to tell the tale.

Stacy Conradt