The "ends of the Earth" is just an expression for most people. But Erling Kagge has been there... exploring both poles and climbing to the summit of Mount Everest. He's come to appreciate something he found in abundance in all three places: silence.
In fact, he wrote a book musing on the virtues of the absence of sound, called Silence: In the Age of Noise. It runs the gamut from the physics of sound to the metaphysics of finding silence in noisy places.
And the response has been so strong, it's been translated into dozens of languages from its original Norwegian.
Erling Kagge pays us a visit.