Scientists Say Some of Earth’s Oldest Rocks Preserve Evidence of a Planet Almost Unrecognizable From the One Humans Inherited
Walk outside, look around at the sky, the trees, the pavement under your feet, and then try to imagine a version of Earth with no plants, no oxygen-rich air, oceans the color of weak tea or even rust, and continents that were just beginning to claw their way above a restless, volcanic sea. That alien ...









