Anyway you're familiar with the supermarket routine, I'm sure. All fairly normal and not particularly weird. Although, to an alien race that do their shopping by inhaling consumables through their bottom nostrils, that situation would of course be weird. But to me at that moment everything was fairly normal. Until she started to ask questions. "How are you today?" she asked, smiling.
Dispelling the myth that we get grumpier as we get older, a new study has found the opposite is true and that our happiness levels soar from the age o...