The human clock

The human clock

Hundreds of clocks in laboratories around the world set and capture universal time accurate to one second within 3000 years. They make it virtually impossible for time to slip away from us again.

But perhaps the best timekeeper is the human heart, which measures not the passing of time but the quality of time we've spent. If it's empty, you need to get away from the clock and focus on taking, sharing and losing track of a little time.