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Tracy Kelly

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A Whirlwind Of 20 Km High

By Tracy Kelly /

In three minutes, estimated duration of the earthquake, the crust broke about 500 km long and 150 km wide. The many GPS stations have constituted a map of ground motions: the east coast of the island slipped four meters while the West has moved only a few tens of centimeters The earthquake was followed by […]

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Prostate Cancer: Which Test Is Controversial

By Tracy Kelly /

These results also suggest that interbreeding between early modern humans and Neanderthals took place long ago, after Homo sapiens left Africa but before it disperses in Europe and Asia. Damian Labuda traces the intimate contact or family ties of these two populations very far in history, probably at a crossroads in the Middle East. Thin […]

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Billions Of Rocky Planets In The Milky Way

By Tracy Kelly /

A sequence found in all regions except sub-Saharan Africa The comparison between human DNA and that of Neanderthal man, recently deciphered (1) , showed that there had been a cross between these two species and that Homo Sapiens have fond memories in their genome since it would consist of 1 to 4% of Neanderthal DNA […]

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