Plus, what Cold-War spy satellites reveal about Roman forts; why humans embrace rituals; what fitness tests might reveal about cancer. Plus, a Nat Geo quiz.
| | Thursday, October 26, 2023 | | | | |
 | | 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!
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 | | 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
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 | | 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?
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 | | 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.
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 | | PHOTOGRAPH BY ARON KLEIN | | | |
Today’s soundtrack: Garden, Dinosaur Jr.
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