The geometric earthwork structures, carved into the ground with embankments and ditches, are in some cases more than 2,500 years old, researchers said.
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Flaming chunks of metal crash into homes, farms and parking lots. Who’s to blame? And who pays for the damage?
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A new policy raises questions about testosterone’s effect on aggression in some men.
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A spacecraft meant to push NASA’s Swift Observatory to a higher orbit malfunctioned and started tumbling several days ago. Engineers think it can still succeed.
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Scientists have found smallpox viruses in the remains of people in Chile from around 500 years ago, revealing how the virus may have evolved into a global killer.
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The end of July brings the Alpha Capricornids and the Southern Delta Aquarids, both of which will be most active on Thursday night into Friday morning.
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Researchers at Caltech and Sophia Space, a start-up, have developed a technology using solar power to prevent computer equipment from overheating in orbit.
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CapuchinAI, a portable testing station equipped with a touch screen and facial recognition software, could help scientists study primate intelligence in the wild.
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Scientists managed to confirm pregnancies in three giant mantas with underwater ultrasound scans, offering clues to the animals’ elusive reproductive habits.
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Jérôme Dupras is a member of one of Quebec’s most popular folk rock bands. Now, as the province’s chief scientist, he will help shape its environmental destiny.
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After working for a department store, she switched to archaeology and made important discoveries about prehistoric clothes and gender roles.
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The Biden administration took steps to shield workers from extreme temperatures. The Trump administration is taking a gentler approach with employers.
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A federal plan would impose drastic water cuts on Arizona, California and Nevada in dry years over the next decade. A legal battle could follow.
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Cincinnati wants to take in people fleeing climate disasters. Plus, the latest on fires in Europe.
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Hundreds of bases are contaminated with PFAS, which are linked to low birth weight and other risks. Politicians from both parties are demanding explanations.
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In the latest example, the Energy Department will convert a shuttered Cold War-era uranium enrichment facility into a data center campus and gas plants.
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Senator Rand Paul said the committee he leads would vote next week on whether to hold Dr. Fauci in contempt of Congress.
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The state is a major importer of fracking wastewater, which gets pumped underground but doesn’t always stay there. The city of Marietta is fighting back.
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A German scientist, he developed a process for turning corpses into posable figures. His shows drew millions of visitors, and many detractors.
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Claude Mythos Preview discovered new attacks in testing against weakened cryptographic algorithms, which protect online financial transactions, private communications and more.
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I didn’t want to have to depend on a weather app to know when the storms are coming.
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More light at the day’s end comes at a price: much later winter sunrises across much of the U.S. Scientists have documented consequences for public health and the economy.
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