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THE KNOWLEDGE FEED

Every Item Inside the Time Capsule Nickelodeon Buried in 1992

Adrienne Crezo

In 1992, Nickelodeon assembled items important to the kids of the day, put them in a big orange time capsule, and buried it in front of Nickelodeon Studios in Universal Studios.

Name the Songs on Bruce Springsteen's Born to Run

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Released in August 1975, Born to Run was Bruce Springsteen's third album. Soon after, TIME and Newsweek put The Boss on their covers in the same week. Rolling Stone has ranked it #18 on a list of the Top 500 Albums of All Time. Can you name all eight songs on the album?

The Tallest Building in Kraków is "Szkieletor," He-Man's Nemesis

Chris Higgins

Photo circa 2008 courtesy of Joanna J., used by Creative Commons license. In 1975, construction began on a high-rise building in the center of Kraków, Poland.

Why is the Retirement Age 65?

Matt Soniak

In the early 1880s, Chancellor Otto Von Bismarck of Germany had a problem. Marxist unrest was spreading across Europe and some of his own countrymen were calling for socialist reforms.

Brain Game: Math Square #127

Today's Monday Math Square mentalfloss.com Brain Game challenge is the first of the summer.

Morning Cup of Links: Walk Your Human

Miss Cellania

NASA's Mars probe Curiosity is scheduled to land on the red planet on August 6th.

5 Questions: It All Comes "Don" to You

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World War I Centennial: With Friends Like These...

Erik Sass

Installment #23: In the 19th century, European statesmen came to share an amoral (some would say cynical) view of geopolitics, in which international relations were based solely on the size and streng

The Earliest LOLCats and Other 19th-Century Animal Photography

Jill Harness

LOLcats and other funny animal pics weren't born with the Internet; they've been around since the end of the 19th century. Here are some of the early photographs that inspired

Weekend Links: The Statue of Liberty in Paris

Allison Keene

Most of the United States has been in a devastating heat wave this week (also I've been watching the Euros taking place in Poland and Ukraine and it seems there are very high temperatures there n

This Sand Hates Water!

Chris Higgins

If you take regular sand and expose it to trimethylsilanol vapor (ahem, (CH3)3SiOH for the chemists in the crowd), the sand becomes hydrophobic -- literally meaning "water-fearing." The res

6 Summer Camps for Exceedingly Wealthy Children

Rob Lammle

For many, summer camp means a week sleeping in a cabin that doubles as a sweat lodge, spider-infested communal showers, and swimming in a scummy pond.

Last Week's Most Popular Stories

Jason English

In case you weren't obsessively refreshing mentalfloss.com all week, here's what you

Who Invented the Knuckleball?

Scott Allen

RAY STUBBLEBINE/Reuters/Landov New York Mets pitcher R.A.

Íslendingabók: How Icelanders Avoid Incest and Find Celebrity Relatives

Jill Harness

Living in a small, mostly static population creates some uncomfortable issues.

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