It's twice the length of the Hoover Dam, but it was only discovered with the help of satellite imagery.

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These planned communities became popular in the U.S. after World War II.
What do Julia Child, Paul Revere, and Harriet Tubman all have in common? Each played a crucial role in the clandestine world of espionage and intelligence.
Show your friends you’re no oaf this April 1 with these 21 foolishly fun synonyms.
JD Pardo (Mayans M.C., The Terminal List) tags along for Arturo’s tale of three escape artists (Frank Morris, John Anglin, and Clarence Anglin) who attempted to break out of one of the most infamous prisons of all time: Alcatraz.
Life looks a lot different than it did in 1975, and that’s largely thanks to the digital revolution that took place 50 years ago.
Discover some of the most gripping books written by women to receive the coveted Hugo Award, including classics from Ursula K. Le Guin and others.
We know cats purr for a variety of reasons. But the actual mechanics of how they make their signature sound remains unclear.
Some discontinued Ben & Jerry’s ice cream flavors, like Black & Tan and Duff & D’oh! Nuts, have joined their kin in the Flavor Graveyard.
Billy Magnussen (Game Night, The Franchise) takes some time for a leisurely trip with Arturo to the early 1900's, where they discover the story of Gunther Plüschow, one of the most infamous escapees from World War I.
It’s 123 years old. Oh, and it’s still edible.
All five answers to the questions below have something in common. Can you figure it out?
Let’s take a look at a few of the rules regarding duties and declarations, and see what's up with the duty-free shop.
Kelsey McKinney (host of the hit podcast ‘Normal Gossip’) joins Arturo as they venture to 1960s London to meet the notorious burglar and self-proclaimed Queen of the Underworld: Zoe Progl.
Cast iron cookware can last for decades—unless you screw up.
Edgar Allan Poe knew what he was doing when he chose the raven to croak “nevermore” in his famous poem.
A miniature dachshund named Valerie has defied the odds, evading capture and surviving in the wild for over a year.
The REAL ID program is finally being enforced. Here's how it could affect you.
The Vietnamese word ‘cột sống’ technically means “spine”—but to the country’s Gen Zers, it’s slang for something else entirely.
Dasani bottled water was poised to take the UK market by storm, but shortly after it was released in 2004, Coca-Cola yanked it off shelves. Discover the real reasons why here.
‘Magic: The Gathering’ cards can get extremely pricey among collectors, but certain versions—like the 1993 Black Lotus card—could still be worth a lot of money to this day.
Joseph Gordon-Levitt (‘Flora and Son,’ ‘Mr. Corman’) and Arturo examine the troubling trends behind a modern day escape in Dannemora, New York.