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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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The Mystery of Singing Desert Dunes Explained

Introduction

Sometime around 1271, a young Venetian crossed the desert east of the...

June 7, 2026

  • Geomorphology

How Diamonds Reach Earth in Explosive Eruptions

Introduction

The ground gave almost no warning. Somewhere beneath what would...

June 7, 2026

  • Petrology

The 26-Second Pulse: Earth’s Heartbeat No One Can Explain

Introduction

On 6 June 1961, the needles on long-period seismographs scattered...

June 7, 2026

  • Geophysics

Liminal Spaces in Geology: Earth’s Real Undergrounds Voids

You Have Noclipped Into the Earth

Stand in the middle of...

June 6, 2026

  • Geomorphology

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

Why Lava Cracks Into Hexagons: Columnar Basalt Explained

Introduction

Some patterns in nature look too deliberate to be accidental. The hexagonal...

June 4, 2026

  • Petrology

Shanay-Timpishka: The Amazon’s Boiling River

Introduction

Walk the bank of the Shanay-timpishka and the first thing...

June 4, 2026

  • Geophysics

Desert Varnish: Microbes, Manganese, and Mars

Introduction

Desert varnish is a dark, paper-thin coating of manganese and...

June 4, 2026

  • Geochemistry

Batagay Megaslump: Siberia’s Growing Permafrost Wound

Introduction

The Batagay megaslump, often called the Batagaika crater, is the largest retrogressive...

June 3, 2026

  • Geomorphology

How Mega Floods Carved Washington’s Scablands

Introduction

On the evening of January 12, 1927, a 44-year-old geology...

June 3, 2026

  • Geomorphology

Lituya Bay: The Tallest Wave Ever Recorded

Introduction

On the night of July 9, 1958, a wall of...

June 2, 2026

  • Geohazards

Kola Superdeep Borehole: The Deepest Hole on Earth

Introduction

On a low rise of Arctic tundra near the Norwegian...

June 2, 2026

  • Geophysics

Earthquake Lights: The Science Behind the Glow

Introduction

Just before 11 p.m. on 8 September 2023, security cameras around Marrakech...

June 1, 2026

  • Geophysics

Oklo: Earth’s Natural Nuclear Reactor

Introduction

In May 1972, at the uranium-enrichment plant at Pierrelatte in...

June 1, 2026

Volcanic Lightning: Inside the “Dirty Thunderstorm”

Introduction

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

May 31, 2026

  • Volcanology

Lost City Hydrothermal Field: Where Life May Have Begun

A Light in the Abyss

The Lost City Hydrothermal Field is...

May 31, 2026

  • Geochemistry

Blood Falls: Why an Antarctic Glacier Bleeds

Introduction

In the summer field season of 1911, a young Australian geologist named...

May 30, 2026

  • Glaciology

What Is a Limnic Eruption? Lake Kivu’s Hidden Risk

Introduction

A limnic eruption is one of Earth’s strangest killers, an...

May 30, 2026

  • Geohazards

Eye of the Sahara: The Richat Structure Explained

Introduction

On June 4, 1965, James McDivitt and Ed White were four days...

May 30, 2026

  • Geomorphology
Close-up of a granite rock sample

Granite

Granite is a durable igneous rock used in construction, monuments, and countertops.

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