A “lucky” linkup between orbiters helped scientists study how the Red Planet’s ionosphere responds to solar events.
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Scientists Remap Earth’s Gravity
An uncommon way of looking at the world reveals the evolution of a deep gravity hole beneath Antarctica.
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Shrinking Sea Ice Is Ruffling Emperor Penguins’ Feathers
A scientist stumbled upon evidence of penguin molting sites in satellite data, but the sea ice these birds rely on is disappearing.
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Volcanism Could Lead to Less, Not More, Atmospheric CO₂
The atmospheric concentration of carbon dioxide temporarily fell by 50% immediately preceding a period of intense volcanism, likely because of increased weathering, new results reveal.
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Earth’s Climate Records Are Melting
An ice core from the Weißseespitze Glacier collected in 2019 gave researchers a peek into the history of Earth’s wildfires, volcanic eruptions, and anthropogenic activity. In the years since, much of the glacier has disappeared.
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Apollo Samples Told a Conflicting Story About Lunar Magnetism, Until Now
Observations suggested the Moon had both a weak and strong magnetic field in the distant past. A new study presents a theory accommodating all the evidence.
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Earth’s “Green Wave” Is on the Move
Researchers analyzed 40 years of satellite data and found that Earth’s seasonal wave of greenness is shifting northeast.
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Scientists Discover South America’s First Space Glass Fields, in Brazil
Tektites, rare natural glasses formed by ancient asteroid impacts, were found stretching across more than 900 kilometers of the country’s interior.
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Gold Mines Expose South African Children to Uranium
A new study found that children living near mine tailings in Johannesburg had nearly twice as much uranium in their hair as children not living near tailings—and the younger the children, the higher the uranium concentrations.
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Tracing the Eruption History of a Volcano in a Tourist Hot Spot
Sediment cores extracted from deep under the Aegean Sea reveal the timing of explosive eruptions of Kolumbo Volcano and a potential link to neighboring Santorini.