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Last Week's Most Popular Stories

Jason English

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

Groundhog Day Explained

Chris Higgins

Weekend Links: Pez Dispensers Featuring Your Face

Allison Keene

Friday Happy Hour: Where Were You 20 Years Ago Today?

Jason English

The Self-Fulfilling Delusion of Acting like a Superhero

The Week

A new study shows that having people fly like Superman in a virtual-reality simulator makes them act more heroic in real life.

At the Libraries: Award Winning Children's Books

Miss Kathleen

15 Historical Brother vs. Brother Matchups

Alex French

For as long as there have been brothers, brothers have been battling each other. In honor of the Harbowl, here's our incomplete guide to sibling rivalries.

The Missing Links: The Best Word in the English Language

Colin Patrick

The Weird Week in Review

Miss Cellania

Brain Game: Something's Going On

Sandy Wood

How Can Owls Rotate Their Heads 270 Degrees Without Dying?

Erin McCarthy

For humans, sudden gyrations of the head and neck—whether they’re from car accidents, rollercoaster rides, or chiropracty gone awry—can tear blood vessel linings in the neck, leading to clots that can

Morning Cup of Links: Groundhog Day Origins

Miss Cellania

See What Beatboxing Looks Like from Inside the Vocal Tract

Erin McCarthy

When University of Southern California researchers Michael Proctor, Shrikanth Narayanan and Krishna Nayak wanted to know what beatboxing looked like from inside the vocal tract, they decided to do som

Venetia Burney: The 11-Year-Old Girl Who Named Pluto

Daven Hiskey

On March 14, 1930, 11-year-old Venetia Burney and her family were eating breakfast at their home in Oxford, England, discussing the biggest news of the day: The discovery of a new planet.

The Missing Links: Mind-Boggling Lego Riddles

Colin Patrick