A first thought when describing a rock formation likely isn't a mille-feuille, but there are actually certain types composed of many thin layers that bring the flaky pastry to mind. Not only that—but ...

Deep below the Tyrrhenian Sea offshore Italy, scientists drilled into what they thought would be dark mantle rock—and found ...

Just over 4 billion years ago, magma from Earth’s mantle infiltrated a fracture in the young planet’s primordial crust. Over the following aeons, nearly all of the planet’s early crust melted back ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Here’s what you’ll learn in this story: What are now thought to be the oldest rocks ...