Satellite observations of the Earth's magnetic field reveal a fast-moving stream of metal deep inside the planet.
Half of the original mass of India and Eurasia is missing, upending how geologists believed tectonic interactions worked.
Continental shifting may have acted as a natural mechanism for extreme carbon sequestration.
A new study suggests that plate tectonics -- the dynamic processes that formed Earth's mountains, volcanoes and continents -- began about 3 billion years ago. By analyzing trace element ratios that correlate to magnesium content in ancient Earth's crust, the researchers provide first-order geochemical evidence for when plate tectonics first got underway.
