Scientists believe they have found a new way to track the rise and fall of some ancient civilisations - by studying fossilised mites that thrive in the dung of their livestock.
A team from America, France and Britain have been studying mites from the soil in the Andes in Peru and say the tiny creatures can provide clues to changing patterns of trade and of disease epidemics through history...
http://news.bbc.co.uk/2/hi/science/nature/6490389.stm
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