A simple four-second guide to reading the room, respecting boundaries, and avoiding greeting-gone-wrong moments.

Moments after the Chicago Bears put the hands to the Green Bay Packers in their NFC wild-card matchup, another pair of hands took center stage. As is custom, NFL players and coaches meet on the field ...

You know how postgame coaches' handshakes are supposed to work: The field generals, surrounded by a retinue of local police trying hard not to smile for the TV cameras, meet at midfield and handshake, ...

Jonathan, 23, a student, meets Katie, 27, an environmental campaigner ...