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Rocks

An atlas of rocks and minerals: each one a record of the conditions that made it.

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Yellowstone Magma Cap Discovered at 3.8 km

Introduction

In the summer of 2020, with the park’s gates shut...

June 14, 2026

  • Volcanology

Volcanic Lightning: Inside a Dirty Thunderstorm

A storm with no cloud

On the night of 15 January...

June 12, 2026

  • Volcanology

Santorini 2025 Earthquake Swarm Explained

Introduction

By late January 2025, the residents of Santorini had stopped sleeping well....

June 11, 2026

  • Geophysics
  • Volcanology

Kawah Ijen Blue Fire: Burning Sulfur, Not Lava

Introduction

Climb to the rim of Kawah Ijen at two in...

June 10, 2026

  • Volcanology

Danakil Depression: Earth’s Hottest Rift

Introduction

Before sunrise the salt plain gives nothing away. The Asale...

June 5, 2026

  • Volcanology

Ol Doinyo Lengai: The Black-Lava Volcano That Turns White

Introduction

A guide and a tourist are picking their way across...

June 5, 2026

  • Volcanology

Volcanic Lightning: Inside the “Dirty Thunderstorm”

Introduction

At 5:02 p.m. local time on January 15, 2022, an...

May 31, 2026

  • Volcanology

Mount Rainier’s 1507 Lahar Buried a Forest Alive

Introduction

In late summer of 1507, a Douglas-fir stood in what is now...

May 27, 2026

  • Geohazards
  • Volcanology

Ethiopia’s Hayli Gubbi Eruption After 12,000 Years

Introduction

On 23 November 2025, a shield volcano in Ethiopia’s Afar...

May 26, 2026

  • Volcanology

The Great Dying: Earth’s Deadliest Extinction

Introduction

The Great Dying took place 251.902 million years...

May 16, 2026

  • Geohazards
  • Volcanology

Debunking Common Geology Myths (What TikTok Gets Wrong & Right)

Introduction

Scrolling through geology TikToks and Insta reels is a bit like a...

November 24, 2025

  • Geohazards
  • Geomorphology
  • Geophysics
  • Volcanology

Discover the World’s Most Active Volcanoes

Introduction

Around forty-five volcanoes are erupting somewhere on Earth right now. A dozen...

April 26, 2024

  • Volcanology

Volcanoes: Nature’s Power and Earth’s Fiery Secrets

Volcanoes are one of nature’s most fascinating and powerful phenomena, serving as awe-inspiring reminders...

April 24, 2024

  • Volcanology

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