And if you see a piece of rubbish lying on the footpath, don't step over it -- pick it up.

CNN: The stark reality of a throw-away society

At first it is thought it is a piece of rubbish.

BBC: How the Lockerbie inquiry unfolded

Anyway, they appear to enjoy themselves, whooping when a particularly good piece of rubbish is found and bringing it to me for my approval.

ECONOMIST: Travels among the Ticuna