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.

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A Time-Lapse of Alaska's Northern Lights

The beauty of aurora borealis, as seen from America's last frontier

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What Do You Wish You Learned in College?

Ivy League academics reveal their undergrad regrets

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Famous Movies, Reimagined

From Apocalypse Now to The Lord of the Rings, this clever video puts a new spin on Hollywood's greatest hits.

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What Is a City?

Cities are like nothing else on Earth.

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CrossFit Versus Yoga: Choose a Side

How a workout becomes a social identity

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In Online Dating, Everyone's a Little Bit Racist

The co-founder of OKCupid shares findings from his analysis of millions of users' data.

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