Far below your feet, nearly 1,800 miles beneath oceans and continents, Earth carries two massive scars from its violent youth. They are so large they rival continents in size, yet no human will ever ...

Far below the waves of the Pacific, scientists are mapping clusters of dense, towering formations that do not fit neatly into existing models of how Earth’s interior behaves. These strange structures, ...

The vast majority of our planet’s oceans remain unexplored, hiding secrets that challenge everything we thought we knew about human history and geology. Every so often, sonar technology or daring deep ...

Think you know your Dyson spheres from your dark blobs? This cosmic crossword dives into the strangest, most mind-bending structures ever spotted — or imagined — in the universe. When you purchase ...

A rock-carved “sphinx” and an obscure pyramid in Vigklafia, Laconia in southern Greece remain shrouded in mystery regarding ...