Author: Dr. Marcus Thornfield, Volcanologist and Geophysical Researcher

Pahoehoe sounds like a Hawaiian greeting. Aa sounds like the noise you make when you step on it barefoot. Those aren’t coincidences—both terms come

Picture this: a volcano erupts somewhere—doesn’t really matter where—and within weeks, crops are failing in places that have never even heard of

Imagine squeezing toothpaste through a tube, except the toothpaste is molten rock at 1,200 degrees Celsius and the tube is a crack in the ocean floor two miles down.

Most people see volcanic ash and think: apocalypse dust. Gray powder that chokes jet engines, buries towns, ruins crops. The stuff of Pompeii nightmares

The Toba supervolcano erupted 74,000 years ago in what is now Indonesia, spewing roughly 2,800 cubic kilometers of ash and rock into the atmosphere. That’

You’d think someone who spends their career studying mountains that occasionally explode would have a death wish. But volcanologists—the scientists

Beneath your feet right now, roughly 4,000 miles down, Earth’s core is sitting at a toasty 10,800 degrees Fahrenheit—hotter than the surface of the sun.

The seismometer sits there, unassuming as a shoebox, scribbling its little squiggles on paper or pixels. Most days it records the rumble of trucks, the

Deep beneath your feet, carbon atoms are getting squeezed like grapes in a hydraulic press. And the press? That’s a volcano doing what volcanoes

Deep beneath your feet right now, there’s a plumbing system that makes Manhattan’s steam tunnels look like garden hoses. We’