David Hanna

David Hanna is the author of Knights of the Sea: The True Story of the Boxer and the Enterprise and the War of 1812. He teaches history in New York and lives with his family in Morris County, New Jersey.

David Hanna: Blog articles

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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.

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What Happens in 60 Seconds

Quantifying human activity around the world

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