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.

Never Tell People How Old They Look

Age discrimination affects us all. Who cares about youth? James Hamblin turns to his colleague Jeffrey Goldberg for advice.

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Video

Never Tell People How Old They Look

Age discrimination affects us all. James Hamblin turns to a colleague for advice.

Video

Would You Live in a Treehouse?

A treehouse can be an ideal office space, vacation rental, and way of reconnecting with your youth.

Video

Pittsburgh: 'Better Than You Thought'

How Steel City became a bikeable, walkable paradise

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A Four-Dimensional Tour of Boston

In this groundbreaking video, time moves at multiple speeds within a single frame.

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Who Made Pop Music So Repetitive? You Did.

If pop music is too homogenous, that's because listeners want it that way.

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