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Saturday 1 March 2014

OLDEST BIT OF EARTH

A fragment of ZICRON -4.4 billion years old was found at the JACK HILLS REGION ,WESTERN AUSTRILIA.Scientists say its is evidence of the earth,s crust formed soon after the planet evovled from gas and dust swirling around the sun .WISCONSIN,U.S.A boffins said it confifmed theories of how earth cooled to become habitable.

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