Mental Floss

ALL STORIES

How much money does it actually take to be happy? See the global price tag of happiness mapped out, from the most expensive cities to the lone country where wages outpace the cost of peace of mind.

Nitya Rao




Leaves against bright blue sunny sky

Why are sunsets red, for that matter? And why is space black? The answer is all about how light interacts with Earth's atmosphere.

Eden Gordon