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The space agency helped out on a landmark criminal case in 1990.

A map of the 63 National Parks in the U.S.

From Acadia to Zion, the U.S. has some pretty majestic national parks. Here’s one fun fact about every single one—plus a map so you can see where they all are.

See if you can decipher this twisted tune.

It’s time to play Tune Twist, where we translate the lyrics of popular songs into multiple languages and then back into English. Can you figure out what the song is, or who performed it?

Latin isn’t widely spoken in Latin America, so why is it called that?

Now that Lester Holt is stepping away from the NBC anchor desk, let’s celebrate the journalist known around the newsroom as “Iron Pants.”

Superbad Official HD Trailer (2007) | Superbad

Feeling nostalgic? Some of the most-loved millennial movies like ‘Superbad’ to ‘The Big Lebowski’ have stood the test of time.

Road signs shout less than they used to.

Road signs have changed case in the last 15 years or so—here's why.

Civil War medical officers including Jonathan Letterman, a surgeon who pioneered the ambulance-to-ER transport of wounded patients during the Civil War.

Civil War surgeons learned fast. Here are a few of the MacGyver-like medical solutions that have had a lasting impact.

Some words have been around longer than you think.

We dig down to the root of the issue.

This stickler doesn’t like how people are using the word ‘phenomenal.’

Not even the strictest sticklers seem to care about how we use words like ‘abhorrent’ and ‘sodden’ anymore.

Katherine Johnson at NASA's Langley Research Center, 1980.

Before she helped send the first astronauts to the moon, Katherine Johnson was a human “computer” working behind the scenes at NASA.

The Dame of Sark, Sibyl Hathaway, in March 1953.

Dame Sibyl Hathaway protected her people with the unlikeliest of weapons: Feudal etiquette, old-world manners, and a dollop of classic snobbery.

They'll stay good for longer than you might think.

Grocery shopping on a budget? Here are some essential foods that you probably didn’t expect can hold up well inside of a freezer.

More than a century ago, Christian health gurus invented cereal to promote a healthy lifestyle free of sin. Little did they know, their creation would eventually be used to promote everything from radio and cartoons to Mr. T and tooth decay.

What‘s your state‘s favorite McDonald‘s menu item?

McDonald‘s fans across the U.S. have spoken: See which items top the charts in each state.

This winter car hack can make scraping ice off your windshield even easier. And the best part of all? You might have everything you need already, right in the kitchen.

All five answers to the questions below have something in common. Can you figure it out?

The ultimate cheat code to winter coziness.

You’d be surprised by the ways you can keep yourself warm—and these budget-friendly winter hacks can help, too.

The truth is, sometimes the answer varies.

Are bagged salads and other leafy greens safe to eat without rinsing off first? Find out whether pre-washed produce still needs to be cleaned off beforehand, plus more.