How 2 massive structures deep in Earth made it habitable

Technology Nov 23, 2025

Scientists have long known about two giant, dense zones nearly 2897km below us—right where Earth's core meets the mantle.
Found under Africa and the Pacific Ocean, these hidden formations could explain why Earth is so good at supporting life.
The research comes from Yoshinori Miyazaki and his team at Rutgers University.

Why does this matter?

Billions of years ago, elements like silicon and magnesium mixed deep inside the planet, creating hot, unique regions that helped control Earth's cooling and volcanic activity.
This process shaped our atmosphere and oceans—key ingredients for life—and even links to volcanic hotspots like Hawaii and Iceland today.
Basically, what's happening way beneath our feet still shapes the world we live in now.