Early Earth’s Deep Mantle May Have Held More Water Than Previously Believed, Study Finds

Dec 14, 2025 - 15:00
Early Earth’s Deep Mantle May Have Held More Water Than Previously Believed, Study Finds
Scientists have discovered that Earth’s deep mantle may have stored an ocean’s worth of water during the planet’s earliest years. New experiments show that bridgmanite, a dominant mantle mineral, can hold much more water under extreme heat, offering fresh insight into how Earth retained water and became habitable.