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Why Do All Dental Offices Smell the Same?

Kara Kovalchik

Eugenol, the active ingredient in clove oil, is the culprit. Clove oil has been used to numb toothache pain since Medieval times.

Music History #5: "I Don't Like Mondays"

Bill DeMain

“I Don’t Like Mondays” Written by Bob Geldof (1979) Originally sung by The Boomtown Rats The Music http://youtu.be/8yteMugRAc0 It may be the catchiest murder ballad of all time.

Brain Game: Math Square #134

Good luck solving today's mentalfloss.com Brain Game Monday Math Square challenge: Place the digits 1 through 9 in the white blanks so that the mathematical equations work both across and down

Morning Cup of Links: Giraffe Overload

Miss Cellania

Back to School Boot Camp. Pay attention: do not eat paste, and do not take your pants off. * Fight Songs: Eleven Great Musician-Politician Campaign Feuds.

Will the Real "Super Mario Bros. 2" Please Stand Up?

Chris Higgins

This week, Nintendo released "New" Super Mario Bros. 2. But "Old" Super Mario Bros. 2 isn't what you think it is.

Weekend Links: Volcano Eruption Seen From Space

Allison Keene

An interesting article as the NFL season starts to rev up about why it's getting harder and harder to watch and support football.

The Slowest Slo-Mo Ever Recorded

Chris Higgins

"How does light look in slow motion?" asks Ramesh Raskar in this brief TED Talk, demonstrating his "femto-photography," a slow motion technique that achieves one trillion frames pe

The Mobile Phone Throwing World Championships Were Yesterday

Julia Davis

The World Mobile Phone Throwing Championship took place yesterday in the small town of Savonlinna, Finland.

How Ben Franklin Became a Colonel in the Pennsylvania Militia

Matt Soniak

Franklin statue image via Shutterstock In the 1750s and 60s, Great Britain and France waged war in North America for colonial domination of the continent.

Last Week's Most Popular Stories

Jason English

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

What Is an "October Surprise"?

Ethan Trex

An October surprise is any bit of news that breaks right before an election that has the capability to help determine the outcome of the race.

Jon Ronson's "Psychopath Test"

Chris Higgins

In this decidedly spooky TED Talk, Jon Ronson explains his journey to understand mental illness, which brought him to a prison for the criminally insane to interview a very sanely-dressed possible psy

Weekend Links: How to Read a Victorian Novel

Allison Keene

Sadly I don't read as many books as I used to. I grew up an incorrigible bookworm, but so much time now is taken up with TV and internet (forsooth!).

Permission to Sin: Why The 7 Deadlies Aren't So Terrible After All

Judy Dutton

Scientists have found that the seven deadly sins aren't all bad. Consider this your official permission to give in to

World War I Centennial: France Tells Russia England Will Fight Germany

Erik Sass

Installment #31: After the Russian and French general staffs met in Paris in July 1912, French Prime Minister Raymond Poincaré (above, at right) followed up with a trip of his own to St.