Phillip Levine and Melissa Kearney

Phillip Levine is an economist at Wellesley College. Melissa Kearney is an economist at the University of Maryland. 

Video

Where Time Comes From

The clocks that coordinate your cellphone, GPS, and more

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Computer Vision Syndrome and You

Save your eyes. Take breaks.

Video

What Happens in 60 Seconds

Quantifying human activity around the world

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