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Four-billion-year-old ancient rocks yield clues about Earth`s earliest crust

Last Updated: Friday, May 30, 2014, 15:35

A researcher spent the better part of three years collecting and studying ancient rock samples from the Acasta Gneiss Complex in the Northwest Territories to understand the environment in which they formed.

How earth looked at various stages in its history

Last Updated: Thursday, January 26, 2012, 19:03

Researchers have now discovered how earth looked at various stages in its history - from the age of the dinosaurs to more recent times- and what would come into focus for alien astronomers.