3.1 billion-year-old rocks in Australia reveal a forgotten chapter of Earth’s water cycle

Scientists have uncovered 3.1 billion-year-old rocks in Australia that hint at an ancient water cycle long before modern plate tectonics. This discovery sheds light on how water was cycled through Earth's crust much earlier than previously understood, suggesting that Earth's hydrosphere may have been more active and complex in its early history. Understanding this ancient water cycle is crucial for reconstructing the planet's climatic and geological evolution, offering insights into how life might have emerged in such an environment. The findings challenge current models of Earth's early water systems and could influence theories on the origins of water on Earth and other planets.