Earth’s Core Cooling Faster Than Thought

Earth’s core is cooling faster than scientists thought, revealing a hotter past and a potentially earlier shutdown of plate tectonics—and a weaker magnetic field than previously believed. New analysis of ancient Australian zircons shows less radioactive heat in Earth’s early days, meaning less initial heat and a quicker cooldown. This reshapes our understanding of planetary evolution, mantle chemistry, and even the search for habitable exoplanets. Support the show:Get a discount at https://solipillow.com/discount/dnn. Advertise on DNN:[email protected] This is an automated, high-level news summary based on public reporting.Report issues to [email protected]. View sources & latest updates:https://sources.thednn.ai/8d4dac14c19f8eae