David Chandler

  • Life on Mars

    Space scientists won't say so, but the results of three brilliantly-conceived experiments lead inevitably to one startling conclusion: Life, in some form, exists on Mars

Video

Where Time Comes From

The clocks that coordinate your cellphone, GPS, and more

Video

Computer Vision Syndrome and You

Save your eyes. Take breaks.

Video

What Happens in 60 Seconds

Quantifying human activity around the world

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