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President Franklin D. Roosevelt used the map to justify the United States entering World War II—but as one historian told Mental Floss, “was a fiction forged by the British intelligence service.”

Nathan Fielder, creator of HBO’s ‘The Rehearsal,’ also owns a successful outdoor apparel brand with terrible customer service.

This ranking breaks down how stress varies across the U.S.—with big differences between regions.

Move over, beef—chicken takes the lead.

Ever wondered why prom-goers wear corsages and boutonnieres? Learn the fascinating history behind these floral trends and their evolution through time.

Geraldo Rivera promised to dig deep in Al Capone’s hotel hideout on Chicago’s South Side back in 1986—here’s the oral history of how it all really went down.

Arlington is some of the most hallowed ground in the United States. But despite its great importance, the cemetery has had more than its share of scandals.

From gorgeous parks to amazing restaurants, these U.S. cities can offer exciting summer getaways without breaking the bank.

Natural rubber is white, and so were the earliest car tires. So, why are modern-day tires black? The answer is linked to Crayola and carbon black.

This riddle dates back to the 1920s—can you figure out the answer?

All over the world, people use the terms 'England,' 'Great Britain,' and the 'United Kingdom’ interchangeably, even though they all mean different things.

These tributes to fallen soldiers may not be as instantly recognizable as the Vietnam Memorial and others, but their stories are no less fascinating—including one that doubles as a mausoleum right in Manhattan.