If people do not wash their hands before handling food, the food could become infected even though it might look clean.

CNN: SHARE THIS

It identified that Indians do not wash their hair as often as westerners (largely because it is too expensive), but always wash it for special occasions.

ECONOMIST: Letters

Similarly, Russian attempts to draw analogies with NATO's bombing of Serbia in 1999 and its encouragement of Kosovo's independence, or with the American-led invasion of Iraq, do not wash.

ECONOMIST: The war in Georgia

These arguments do not wash.

ECONOMIST: Ukraine and the West

"Not only do we need to wash the sticky substance off the birds, but a lot of them arrived in quite a weak state struggling to eat and drink, " he said.

BBC: Dead bird at Portland - Jason Hoad

But such techniques do not tell researchers who brought the Cowboy Wash settlement to its untimely end, nor why.

ECONOMIST: Anthropophagy