Marshall Fitz & John Halpin

Marshall Fitz is Director of Immigration Policy at American Progress, where John Halpin is a Senior Fellow focusing on political theory, communications, and public opinion analysis.

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

Writers

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