* Astronomy

Residents of a remote Chinese village are hoping that DNA tests will prove one of history's most unlikely legends - that they are descended from Roman legionaries lost in antiquity.
Scientists have taken blood samples from 93 people living in and around Liqian, a settlement in northwestern China on the fringes of the Gobi desert, more than 350 kilometres from the nearest city.
They are seeking an explanation for the unusual number of local people with western characteristics - green eyes, big noses, and even blond hair - mixed with traditional Chinese features.

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