A new study shows that Earth’s upper atmosphere can pulse in near-perfect sync with subtle rhythms from the Sun. Researchers tracked minute-scale bursts from a powerful solar flare and found matching fluctuations in electron density overhead. The discovery reveals a direct, finely timed link between solar activity and conditions in Earth’s ionosphere.
The ground beneath major U.S. cities is slowly sinking, according to new research that documents land subsidence in all 28 of the nation’s most populous urban areas. Driven primarily by groundwater extraction, the phenomenon poses a structural risk to homes, roads, and infrastructure in cities such as New York, Houston, and Chicago.
A new study from the University of Maryland and the University of Hawaiʻi has revealed surprising connections between two major volcanic features in the Pacific. By tracing the Louisville hotspot as the source of both the Ontong Java Plateau and a series of underwater volcanoes, the researchers have uncovered fresh insights into the Pacific Ocean’s geological history. This discovery challenges old ideas and offers a clearer picture of how the seafloor and the islands above it have formed over millions of years.
Antarctica has shown a rare shift in behavior, gaining ice mass between 2021 and 2023 after years of steady decline. Using satellite gravimetry, researchers tracked this anomaly and linked it to unusual precipitation rather than long-term change. The findings offer insight into the continent’s sensitivity but little certainty about what comes next.
Historians have long debated whether climate change contributed to the fall of the Roman Empire. New geological evidence from Iceland supports that link, showing that a sudden surge of Greenlandic iceberg transport during the Late Antique Little Ice Age coincided with a period of instability, famine, and migration across Europe. The ice age is thought to have been triggered by volcanic ash from three massive eruptions, which blocked out sunlight and lowered global temperatures.
A new study published in PNAS provides the most detailed view to date of the dormant Uturuncu volcano in southwestern Bolivia, revealing that its long-standing ground deformation and seismic unrest are driven by the movement of hot fluids and gases, not by magma ascent. Researchers conclude there is no immediate eruption risk, but confirm that a deep magmatic system remains active beneath the surface.
A major earthquake along the Cascadia subduction zone would cause sudden coastal land subsidence, allowing seawater to penetrate farther inland. When combined with projected sea-level rise, this would substantially increase flood exposure in currently unaffected communities across northern California, Oregon, and Washington. Similar risks are present in other coastal regions located near active subduction zones worldwide.
A new study proposes that Mars once had a fully molten core, potentially explaining the planet’s hemispheric magnetic field asymmetry. The model links this anomaly to heat loss concentrated in the southern hemisphere, driven by differences in crustal thermal conductivity. The findings offer new insight into Mars’ early interior dynamics and atmospheric evolution.
A recent study from UC San Diego’s Scripps Institution of Oceanography found that ARs were responsible for 70% of years when precipitation deviated from ENSO-based expectations.
A deep-sea mining test carried out in 1979 in the Clarion Clipperton Zone continues to show clear ecological damage, according to a study recently published in Nature. While physical marks on the seafloor persist, some small and mobile organisms have begun to return. Recovery, however, remains slow and incomplete.
