Ivan Oelrich

Ivan Oelrich is a defense analyst who has held senior research positions at the Institute for Defense Analyses, Harvard's Kennedy School of Government, the Congressional Office of Technology Assessment, the Defense Threat Reduction Agency, and the Federation of American Scientists.

Ivan Oelrich: Blog articles

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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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