Add Yahoo as a preferred source to see more of our stories on Google. We spend much of our lives in the in-between — those fleeting moments when one thing has ended but the next has not yet begun.

Why certain memories stay with us for a lifetime and what sparks them.

We spend much of our lives in the in-between — those fleeting moments when one thing has ended but the next has not yet begun. This space has a name, and it’s called “liminal.” It is the thin veil ...