A flat earth documentary claims it has finally solved the ice wall problem. The argument sounds confident, but does it hold ...

CNN — The burgeoning wave of nature documentaries increasingly contains a concerted environmental message: If you enjoy watching these remarkable animals in their native habitats, start thinking ...

Researchers have discovered chemical fingerprints of Earth's earliest incarnation, preserved in ancient mantle rocks. A unique imbalance in potassium isotopes points to remnants of “proto Earth” ...

When Earth was a molten inferno, water may have been locked safely underground rather than lost to space. Researchers discovered that bridgmanite deep in the mantle can store far more water at high ...