3.5-Billion-Year-Old Rocks Rewrite the Story of Plate Tectonics

Ancient rocks are revealing that early Earth may not have been geologically still at all. Earth’s story is recorded in its tectonic plates. As these plates moved, they reshaped continents, opened oceans, and helped produce the climates and environments that made evolution and Earth’s rich variety of life possible. That raises a major question: when [...]