Two-Billion-Year-Old Water Could Provide Clues To "Alien" Life On Earth And Mars

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Ancient Water (Photo Credit: University of Toronto)

When geologists from the University of Toronto discovered water dating back 1.5 billion years at the Kidd Mine in Ontario, Canada, in 2013, they thought they had hit the jackpot. However, digging further inside the world’s deepest base metal mine led to an even bigger discovery — water that has been locked in the earth’s crust for at least 2 billion years!

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