
Nearly three kilometres beneath a Canadian mine, geologists found water that may have been isolated in the rock for roughly two billion years — older than animals, plants and almost everything we think of as complex life. The brine was so salty and bitter that, when one researcher tasted it, she was sampling a flavour shaped by a world humans never knew
Nearly three kilometres below the surface, in a mine in northern Ontario, geologists found water that had been isolated in the rock for roughly two billion years.














