The researchers, at Sweden's Uppsala University, hope it will aid earlier diagnosis of the disease.

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To test this idea, Dr Goodman turned to Sweden specifically, to a group known as the Uppsala Birth Cohort.

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These people (there are about 14, 000 of them) were born between 1915 and 1929 in Uppsala University Hospital.

ECONOMIST: The demographic transition: More or less | The

Oxygen was discovered by Joseph Priestley, in Wiltshire, in 1774, and by Carl Wilhelm Scheele, in Uppsala, a year earlier.

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Inventor of the Celsius temperature scale and the Celsius thermometer, he became professor of astronomy at the University of Uppsala in 1730.

CNN: Thursday,

The idea is the brainchild of Swedish businessman and entrepreneur Oscar Dios, who has been running hostels in Uppsala, Sweden for the past five years.

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"It's the most direct evidence of farming spreading by migration of peoples that you could hope to find, " said lead author Pontus Skoglund, an Uppsala University graduate student.

WSJ: Migrations Spurred Agriculture Spread, Studies Indicate

Genetic analysis led by a team at Sweden's Uppsala University found that the woman closely resembled modern-day Southern Europeans and had many genetic differences from three hunter-gatherers living at the same time in Sweden and buried nearby.

WSJ: Migrations Spurred Agriculture Spread, Studies Indicate

Hans Ellegren and Ben Sheldon, two biologists at the University of Uppsala, in Sweden, and their colleagues, have demonstrated that female collared flycatchers do indeed adjust the sex ratios of their broods according to the sexiness of their mates.

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