Geologists have discovered the world’s oldest water, hidden deep in a Canadian mine, and one brave scientist even tasted it, revealing something completely unexpected. Geologists have unearthed the world’s oldest known water, hidden deep beneath the surface of a Canadian mine for an astonishing 2.64 billion years. The find, which was detailed in a 2016 study published in Nature, has profound implications not only f... [4231 chars]