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THE SURPRISE INSIDE THE VOLCANIC CRATER

Thursday, October 26, 2023

In today’s newsletter, we encounter a rare phenomenon inside one of Earth’s most remote volcanoes, discover what fitness level says about cancer risk ... and find evidence of dinosaurs just before the Great Extinction. Plus, a new Nat Geo quiz!

VIDEO BY RENAN OZTURK

No one had ascended this forbidding volcano before. No one had peered over the edge to see one of the planet’s rarest sights.

Inside, this remote South Atlantic island volcano churned and gurgled a “lake of fire.”

Here’s how a team led by Nat Geo Explorer and volcanologist Emma Nicholson got there and made that awesome discovery. It's also the topic of a new documentary premiering today on the Nat Geo Channel. Oh, the images!

A graphic shows the three stages of how lava lakes form: upwelling, degassing, and sinking.

MONICA SERRANO, NGM STAFF; MICHAEL FRY. ART: THOMAS TENERY

How lava lakes form: This graphic shows magma first rising from an underground reservoir, its gases forming bubbles. Reaching the surface, it radiates heat and releases gases that form a plume. Some degassed magma sinks, but new flows may bring it back to the surface. Read more.

Watch: Explorer: Lake of Fire, premiering on the National Geographic Channel tonight at 10 p.m. et/9c — and tomorrow on Disney+ and Hulu

STORIES WE’RE FOLLOWING

Cold-War spy satellites reveal hundreds of undiscovered Roman forts in desert frontier

What your fitness level says about your risk of cancer

The eerie California mansion was one of the first to draw tourists seeking spine-chilling thrills

It's not just Beckham. Why humans embrace rituals.

A new face for a child sacrificed 500 years ago on an Andean mountaintop

Why are more young people getting shingles?

We talked with experts about the 4 types of pneumonia, the risks, and treatments

It’s not just Hurricane Otis. Hurricanes are escalating more quickly than ever. Here’s why.

Pictures of U.S. Route 50, the loneliest road in America

The Mediterranean diet has stood the test of time for a reason: It works

IN THE SPOTLIGHT

A “exceptional” discovery in Argentina’s Patagonia region has given researchers a new window into the end of the dinosaur age. They’ve found fossils of a herd of duckbilled hadrosaurs (depicted above).

ILLUSTRATION BY DE AGOSTINI/GETTY IMAGES

We know non-avian dinosaurs died out—as did 75 percent of the Earth's species—with the crash of a huge asteroid 66 million years ago. An “exceptional” discovery in Argentina’s Patagonia region has given researchers a new window into the end of the dinosaur age. They’ve found fossils of a herd of duckbilled hadrosaurs (depicted above), carnivorous dinosaurs, and a tiny mammal. What clues do we have into the dinos’ final days—and which species would survive?

THE END OF THE DINOS

PHOTO OF THE DAY

A macro lens, fast shutter speed, and precise lighting brought out dazzling details in this young flounder (above) that weren’t initially apparent.

PHOTOGRAPH BY DAVID LITTSCHWAGER

Tiny wonders: It’s harder than you think to capture some of the Earth’s tiniest creatures. A macro lens, fast shutter speed, and precise lighting brought out dazzling details in this young flounder (above) that weren’t initially apparent.

SEE THESE WONDERS

WHAT IN THE WORLD?

In a practice dating back millennia, kukeri (pronounced KOO-kuh-ree) dancers don dramatic costumes to dispel evil and invite good.

PHOTOGRAPH BY ARON KLEIN

Are these Halloween costumes? In a practice dating back millennia, kukeri (pronounced KOO-kuh-ree) dancers don dramatic costumes to dispel evil and invite good. Where are they from?

A. New Zealand
B. Norway
C. Bulgaria
D. South Africa

CLICK HERE FOR THE ANSWER

Today’s soundtrack: Garden, Dinosaur Jr.

We hope this newsletter brightened your Thursday! It was curated and edited by David Beard, Nancy San Martín, and Jen Tse. Know someone who might want our newsletter in their inbox? Here’s the signup. See you tomorrow!

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