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NASA Reveals Detailed Subglacial Valleys Beneath Greenland's Ice Sheet

NASA Reveals Detailed Subglacial Valleys Beneath Greenland's Ice Sheet

NASA has unveiled a new, highly detailed map of the bedrock beneath Greenland's vast ice sheet, revealing an expansive network of subglacial valleys. This map was created using a method called Ice Flow Perturbation Analysis, which infers the shape of the buried landscape from subtle signatures left on the ice surface as ice flows over valleys and ridges. Satellites meticulously map these ice surface features, allowing scientists to deduce the underlying topography. The research, published in Geophysical Research Letters, identified 1,943 subglacial valleys, with approximately one-third being newly discovered. Many previously known valleys, particularly those near the ice sheet's edge, were found to extend hundreds of kilometers farther inland than previously mapped in datasets like BedMachine Greenland.

NASA Scientists Uncover Hidden Valleys Beneath Greenland's Ice Sheet, Revealing Ancient Topography

NASA Scientists Uncover Hidden Valleys Beneath Greenland's Ice Sheet, Revealing Ancient Topography

NASA scientists have developed a new method to map the bedrock beneath Greenland's vast ice sheet, revealing an expansive network of previously hidden valleys. This innovative technique, called Ice Flow Perturbation Analysis, utilizes subtle bumps and dips on the ice surface, detected by satellites, to infer the shape of the underlying landscape. The new map has identified 1,943 subglacial valleys, with approximately one-third being newly discovered. Furthermore, about half of the valleys previously known, primarily near the ice sheet's edge, are now understood to extend significantly farther inland, in some cases by hundreds of kilometers. This discovery provides a more detailed and accurate view of Greenland's hidden topography, offering new insights into the island's geological history and the formation of its ice sheet. The findings were published in Geophysical Research Letters.

NTU Singapore Study Reveals Major Earthquakes Impact Southeast Asian Sea-Level Projections

NTU Singapore Study Reveals Major Earthquakes Impact Southeast Asian Sea-Level Projections

A study led by the Earth Observatory of Singapore (EOS) at Nanyang Technological University (NTU Singapore) has found that major earthquakes can significantly influence sea-level projections in Southeast Asia. The research, published in Communications Earth & Environment, indicates that large tremors initiate long-term land sinking, which can continue for years after the initial seismic event. This phenomenon is attributed to a weak layer of hot rock in the upper mantle beneath the Sumatran backarc, which deforms slowly over time. This ongoing ground movement, or land subsidence, means that local relative sea levels can rise faster than previously estimated if not accounted for in sea-level modeling. The study analyzed up to two decades of ground movement data from Singapore, Malaysia, and Thailand, including data from the 2004 Sumatra-Andaman earthquake and the 2012 Wharton Basin earthquakes, revealing that ground movement persisted even hundreds of kilometers from the earthquake epicenters.

Kīlauea Volcano Continues Episodic Eruptions with High Lava Fountains

Kīlauea Volcano Continues Episodic Eruptions with High Lava Fountains

The Kīlauea Volcano in Hawai'i remains active, with episodic eruptions continuing at its summit. The latest activity, referred to as Episode 55, began on September 22, 2026, with overflows from the north vent and smaller overflows from the south vent. Lava fountains have reached heights of 15–30 feet (5–10 meters), and the summit area remains highly active with strong tremors and intermittent spatter bursts. The volcano has been erupting episodically since December 23, 2024, with pauses of two or more weeks between episodes.

Arco, Idaho, Offers Unique Desert Attractions Including Craters of the Moon and Sand Dunes

Arco, Idaho, Offers Unique Desert Attractions Including Craters of the Moon and Sand Dunes

Arco, Idaho, a small city with a population of approximately 900, is situated between Boise and Idaho Falls and serves as a gateway to unique desert landscapes. Historically significant as the site of the world's first nuclear reactor, Experimental Breeder Reactor No.1, Arco is now known for its natural attractions. These include the Craters of the Moon National Monument and Preserve, characterized by lava fields, rift cracks, and volcanic formations, and the St. Anthony Sand Dunes, covering over 10,000 acres of white quartz sand. Visitors can explore lava tubes, hike extensive trails, and engage in stargazing at Craters of the Moon, an International Dark Sky Park. The St. Anthony Sand Dunes offer opportunities for dune buggy riding and hiking.

North Carolina Museum of Natural Sciences Offers Free Admission and Diverse Exhibits

North Carolina Museum of Natural Sciences Offers Free Admission and Diverse Exhibits

The North Carolina Museum of Natural Sciences in downtown Raleigh provides free admission to its extensive exhibits, which span from ancient history to contemporary natural science. The museum is composed of two connected buildings: the original Nature Exploration Center and the newer Nature Research Center. Visitors can explore a wide array of topics including geology, marine life, mammals, birds, insects, and the natural history of North Carolina. A notable feature in the Nature Research Center is the Daily Planet room, which houses a massive suspended globe and allows visitors to observe scientists conducting real-time research through large windows. The museum also includes a living conservatory with various animals and a butterfly garden. Among its prominent displays are a T. rex skeleton engaged in a dramatic pose with an Acrocanthosaurus model, and a colossal blue whale skeleton. The facility also boasts a rooftop terrace offering views of downtown Raleigh and a garden, alongside an on-site cafe.

U2 Dream It All Up Again

U2 Dream It All Up Again

The band goes very, very deep on how they got their swagger back on Carnaval De Luz, with help from Brian Eno, the late Dolly Parton, Rosalía, and Larry Mullen Jr.’s brave neck surgeon

Over 4,000 Earthquakes Recorded in the U.S. in the Past Month

Over 4,000 Earthquakes Recorded in the U.S. in the Past Month

According to QuakeMate, the United States has experienced significant seismic activity over the past 30 days, with 4,027 earthquakes recorded nationwide. The most active regions include the West Coast, Alaska, Oklahoma, Hawaii, and the New Madrid seismic zone. The strongest earthquake during this period was a magnitude 5.6 event near Offshore Chiapas, Mexico. In the last 24 hours alone, 104 earthquakes were reported, with the most recent being a magnitude 3.0 near the Dominican Republic region. Data for these events is sourced from USGS, EMSC, and regional seismic networks, and updates in real-time.

Great Sitkin Volcano Continues Slow Lava Dome Growth

Great Sitkin Volcano Continues Slow Lava Dome Growth

The Great Sitkin Volcano in Alaska is experiencing ongoing slow lava dome growth within its summit crater. The eruption, which began in July 2021, has filled most of the summit crater with lava and extended into nearby valleys. Weak earthquake activity, associated with the lava dome's growth, was observed over the past day. However, poor weather conditions have obscured satellite and webcam imagery. The volcano remains under a WATCH alert level and an ORANGE aviation color code, indicating heightened activity but no immediate explosive eruptions.

Caltech Researchers Challenge Global Interpretation of 2-Billion-Year-Old Earth Clue

Caltech Researchers Challenge Global Interpretation of 2-Billion-Year-Old Earth Clue

Caltech researchers, led by Nivedita Thiagarajan, have published a new study in Geology questioning the long-held interpretation of a significant carbon-isotope signal found in 2-billion-year-old rocks from the Zaonega Formation in Karelia, Russia. This signal, along with a similar one from the Francevillian Basin in Gabon, has traditionally been seen as evidence of a worldwide environmental change during Earth's early oxygenation. The research team, including John Eiler and Aivo Lepland, analyzed gases trapped in microscopic pockets within these rocks. Their findings suggest that the unusual carbon-isotope signal at the Zaonega site can be attributed to local phenomena occurring within a several-hundred-square-kilometer sedimentary basin, rather than a global event. They propose that magma intrusions heated marine sediments, generating hydrocarbons like methane and propane. Microbes near the seafloor then consumed this methane, producing biomass with a light carbon isotope signature, which could explain t...

Fall Equinox 2026: Day and Night Not Truly Equal

Fall Equinox 2026: Day and Night Not Truly Equal

The 2026 Fall Equinox marks the official start of autumn on Tuesday, September 22, at 8:05 p.m. EDT. Contrary to popular belief, day and night are not exactly equal on the equinox. This discrepancy is due to two factors: sunrise and sunset are measured from the Sun's edges rather than its center, and atmospheric refraction bends sunlight, allowing the Sun to appear above the horizon even when it is geometrically below it. As a result, daylight on the equinox is still slightly longer than 12 hours across the United States. The true equal day and night, known as the 'equilux,' occurs a few days later, varying by latitude between September 24 and 27.

Reykjavik, Iceland, Offers Diverse Attractions for Family Tourism

Reykjavik, Iceland, Offers Diverse Attractions for Family Tourism

Reykjavik, Iceland, Offers Diverse Attractions for Family Tourism