The Eugenics Record Office thought pseudoscience could make more perfect humans. It led to unspeakable tragedy.

Boston’s Fenway Park is full of criminals. In the state of Massachusetts, it’s technically illegal to swear at or otherwise insult athletes or officials during sporting events. That would make ...

But of all the English language’s possible sources of difficulty, easily confused and muddled word pairs—from there and their to e.g. and i.e. —surely rank among the most troublesome. Now, a new ...

Because basements are partially below grade, or under the ground, an egress window is often installed near a window well, which provides space to maneuver once a person has exited through the window.

Hundreds of thousands of people were killed and wounded as a result of the bombings, but true counts are difficult to ...

That line of thinking seemed to hold until the summer of 1961, when a highly-regarded public figure began to implore American families to pursue fallout shelters. The advocacy didn’t come from any ...

But it’s a lot harder to remember the village or town where each president was actually born. Let’s see how far you can get in this surprisingly difficult quiz. What about the other states that can ...

A science fiction writer called it an “artifact of such utter simplicity and perfection that it seems it must be either the ...

These little spaces often spark curiosity and nostalgia, though few people know their history.

When you roll down one rear window while driving, the car essentially turns into a massive version of an empty soda bottle.

With 1985 now 40 years gone, Mental Floss is taking a look at the people who were making headlines and emerging as cultural ...

First, pour about a half-gallon of water into an aluminum pan. Mix a bit of dish detergent into the water, and slosh it ...