'Memory cell' holds record of Earth's history
Randy Boswell, Canwest News Service Published: Tuesday 04, MarchA tiny zircon crystal extracted from a three-billion- year-old rock in northern Ontario is being hailed by Canadian and U.S. scientists as a primordial "memory cell" containing a previously unknown record of the Earth's early history. The researchers also believe their microscopic time capsule could provide a new tool for testing whether life has ever existed on other planets. The zircon was extracted from an outcropping of deep-earth rock known as the Kapuskasing Uplift, a rare geological feature near the city of Timmins in which ancient rock that's normally 30 kilometres below the planet's surface is exposed


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