The May Campaign in Virginia

"An outline of the operations of the Army of the Potomac in its march from its encampment on the Rapidan, through the tangled thickets of the Wilderness, to the bloody fields of Spottsylvania, across the North Anna, to the old battle-ground of Cold Harbor."


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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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