The Top 5 Most-Watched Science Videos on YouTube in 2011

YouTube has had quite a year. Today it announced that all told, the site saw more than one trillion playbacks in 2011. Awful videos are, of course, ubiquitous on YouTube (the #1 video on the site for the year that didn't come from a major music label was Rebecca Black's "Friday"), but the most-watched science videos of 2011 are, as you can see below, awesome.

Presented by

Rebecca J. Rosen is a senior editor at The Atlantic, where she oversees the Business Channel. She was previously an associate editor at The Wilson Quarterly.

Riding Unicycles in a Cave

"If you fall down and break your leg, there's no way out."

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Riding Unicycles in a Cave

"If you fall down and break your leg, there's no way out."

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Carrot: A Pitch-Perfect Satire of Tech

"It's not just a vegetable. It's what a vegetable should be."

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An Ingenious 360-Degree Time-Lapse

Watch the world become a cartoonishly small playground

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The Benefits of Living Alone on a Mountain

"You really have to love solitary time by yourself."

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The Rise of the Cat Tattoo

How a Brooklyn tattoo artist popularized the "cattoo"

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