Imagine an entirely barren world. Before you is a volcanic landscape, devoid of flora and fauna. Scattered throughout this gray and black expanse are shallow bodies of water. In each of these natural pools brews a precise blend of chemicals and physical conditions that could serve as the source of life on our planet.
Some scientists have theorized the scene might have looked much like this, rather than an ocean setting, when life first emerged on Earth roughly 4 billion years ago, and a study centered around a present-day lake in the Canadian province of British Columbia offers new support for that idea.
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