Another thing Katherine loved about Facebook was that she didn’t have to think about time zones when updating family.

Today, when time zones have less and less meaning, there is little tolerance for offices' closing for lunch, and worsening traffic in cities means workers can't make it home and back fast enough anyway.

And when we get off the plane, instead of being depleted, we feel recovered and ready to return to the performance zone.

As for us, we've started using our plane time as a work-free zone, and thus time to dip into the recovery phase.

As Jim Loehr and Tony Schwartz have written, if you have too much time in the performance zone, you need more time in the recovery zone, otherwise you risk burnout.

Nearly 700 miles long, the earthquake zone is located by the North American Plate off the coast of Pacific British Columbia, Washington, Oregon and Northern California.

That's the highest percentage of an exclusive economic zone devoted to marine conservation by any country in the world.

The Cascadia Earthquake Zone is big enough to compete with San Andreas it's been called the most dangerous fault in Americ, but it's much lesser known than its California cousin.

This has led some to say that the expert operates in a zone "beyond thought", in a state of flow.