Zircons unlock Earth’s ancient history: Life sprung from a stagnant lid, not plate tectonics

Earth's crust billions of years ago

Plate tectonics involves the horizontal movement and interaction of large plates on the earth’s surface. Shifting plate tectonics, thought to be necessary for the creation of a habitable planet, did not occur on Earth 3.9 billion years ago, new research indicates. Credit: University of Rochester illustration / Michael Osadciw A University of Rochester study using … Read more