Iceland Evacuates Town, Raises Aviation Alert Over Volcano Eruption Concerns

(FILES) The red shimmer from magma flowing out from the erupting Fagradalsfjall volcano behind the landmark Blue Lagoon, some 45 km west of the Icelandic capital Reykjavik, on March 19, 2021. (Photo by Halldor KOLBEINS / AFP)
(FILES) The red shimmer from magma flowing out from the erupting Fagradalsfjall volcano behind the landmark Blue Lagoon, some 45 km west of the Icelandic capital Reykjavik, on March 19, 2021. (Photo by Halldor KOLBEINS / AFP)
TT

Iceland Evacuates Town, Raises Aviation Alert Over Volcano Eruption Concerns

(FILES) The red shimmer from magma flowing out from the erupting Fagradalsfjall volcano behind the landmark Blue Lagoon, some 45 km west of the Icelandic capital Reykjavik, on March 19, 2021. (Photo by Halldor KOLBEINS / AFP)
(FILES) The red shimmer from magma flowing out from the erupting Fagradalsfjall volcano behind the landmark Blue Lagoon, some 45 km west of the Icelandic capital Reykjavik, on March 19, 2021. (Photo by Halldor KOLBEINS / AFP)

Residents of a fishing town in southwestern Iceland left their homes Saturday after increasing concern about a potential volcanic eruption caused civil defense authorities to declare a state of emergency in the region.
Police decided to evacuate Grindavik after recent seismic activity in the area moved south toward the town and monitoring indicated that a corridor of magma, or semi-molten rock, now extends under the community, Iceland’s Meteorological Office said. The town of 3,400 is on the Reykjanes Peninsula, about 50 kilometers southwest of the capital, Reykjavik.
“At this stage, it is not possible to determine exactly whether and where magma might reach the surface,” The Associated Press quoted the Meteorological Office as saying.
Authorities also raised their aviation alert to orange, indicating an increased risk of a volcanic eruption. Volcanic eruptions pose a serious hazard to aviation because they can spew highly abrasive ash high into the atmosphere, where it can cause jet engines to fail, damage flight control systems and reduce visibility.
A major eruption in Iceland in 2010 caused widespread disruption to air travel between Europe and North America, costing airlines an estimated $3 billion as they canceled more than 100,000 flights.
The evacuation comes after the region was shaken by hundreds of small earthquakes every day for more than two weeks as scientists monitor a buildup of magma some 5 kilometers underground.
Concern about a possible eruption increased in the early hours of Thursday when a magnitude 4.8 earthquake hit the area, forcing the internationally known Blue Lagoon geothermal resort to close temporarily.
The seismic activity started in an area north of Grindavik where there is a network of 2,000-year-old craters, geology professor Pall Einarrson, told Iceland’s RUV. The magma corridor is about 10 kilometers long and spreading, he said.



This Ancient Tadpole Fossil Is the Oldest Ever Discovered

 A fossil of the world's oldest tadpole, which coexisted with dinosaurs in the Middle Jurassic about 165 million years ago, is pictured next to a 3D-printed representation of the tadpole and of a fully developed frog, in Buenos Aires, Argentina October 28, 2024. (Reuters)
A fossil of the world's oldest tadpole, which coexisted with dinosaurs in the Middle Jurassic about 165 million years ago, is pictured next to a 3D-printed representation of the tadpole and of a fully developed frog, in Buenos Aires, Argentina October 28, 2024. (Reuters)
TT

This Ancient Tadpole Fossil Is the Oldest Ever Discovered

 A fossil of the world's oldest tadpole, which coexisted with dinosaurs in the Middle Jurassic about 165 million years ago, is pictured next to a 3D-printed representation of the tadpole and of a fully developed frog, in Buenos Aires, Argentina October 28, 2024. (Reuters)
A fossil of the world's oldest tadpole, which coexisted with dinosaurs in the Middle Jurassic about 165 million years ago, is pictured next to a 3D-printed representation of the tadpole and of a fully developed frog, in Buenos Aires, Argentina October 28, 2024. (Reuters)

Scientists have discovered the oldest-known fossil of a giant tadpole that wriggled around over 160 million years ago.

The new fossil, found in Argentina, surpasses the previous ancient record holder by about 20 million years.

Imprinted in a slab of sandstone are parts of the tadpole's skull and backbone, along with impressions of its eyes and nerves.

“It's not only the oldest tadpole known, but also the most exquisitely preserved,” said study author Mariana Chuliver, a biologist at Buenos Aires’ Maimonides University.

Researchers know frogs were hopping around as far back as 217 million years ago. But exactly how and when they evolved to begin as tadpoles remains unclear.

This new discovery adds some clarity to that timeline. At about a half foot (16 centimeters) long, the tadpole is a younger version of an extinct giant frog.

“It's starting to help narrow the timeframe in which a frog becomes a frog,” said Ben Kligman, a paleontologist at the Smithsonian National Museum of Natural History who was not involved with the research.

The results were published Wednesday in the journal Nature.

The fossil is strikingly similar to the tadpoles of today — even containing remnants of a gill scaffold system that modern-day tadpoles use to sift food particles from water.

That means the amphibians' survival strategy has stayed tried and true for millions of years, helping them outlast several mass extinctions, Kligman said.