About a year ago, I wrote about the rise of a new species of rich people. They're called Yawns - young and wealthy but normal. Yawns are like Yuppies Version 2.0 - updated for an environmentally ...

The reasons we reciprocate yawns is hard-wired into our brains, a primitive reflex that if better understood could help treat disorders such as Tourette syndrome. Researchers at the ...