Sex and the Married Couple

Sex is very much OK at 4910 Forest Park Boulevard in St. Louis, where Dr. William Masters and Virginia Johnson preside over their much publicized do-it-yourself therapy for couples with problems in bed.


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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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