Facing Time

On a remote high desert mountain top in Eastern Nevada they're building a clock. But not just any clock – a monument sized all mechanical clock that will run for ten thousand years. It's built as an icon to long-term thinking. In this hour of To the Best of Our Knowledge, we'll face time. We'll talk with the engineer of The Clock of the Long Now. Also, speed dialing be damned – we'll praise slow with Carl Honore. And, the physics of time travel. It's closer then you think.