Earth
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Climate
Climate change may be speeding up ocean circulation
Circulation in the top 2,000 meters of the world’s oceans has increased as a result of faster winds around the globe, a study suggests.
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Climate
A new roadmap shows how the U.S. could be carbon-neutral by 2050
A new report charts a roadmap for the U.S. to have zero carbon footprint by 2050, but only with heavy and immediate investment in carbon removal technologies.
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Ecosystems
Fewer worms live in mud littered with lots of microplastics
The environmental effects of microplastic pollution are still hazy, but new long-term, outdoor experiments could help clear matters up.
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Life
Engineered honeybee gut bacteria trick attackers into self-destructing
Tailored microbes defend bees with a gene-silencing process called RNA interference that takes on viruses or mites.
By Susan Milius -
Earth
Tiny meteorites suggest ancient Earth had a carbon dioxide–rich atmosphere
Simulations of reactions between 2.7-billion-year-old micrometeorites and atmospheric gases hint Archean Earth’s atmosphere had high levels of CO2.
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Archaeology
Mount Vesuvius may have suffocated, not vaporized, some victims
A new study suggests people living near Pompeii who hid in stone boathouses died a slower death when the volcano erupted in A.D. 79.
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Earth
Fed by human-caused erosion, many river deltas are growing
Deforestation and river damming are changing the shape of river deltas around the globe.
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Earth
A 2.2-billion-year-old crater is Earth’s oldest recorded meteorite impact
The newly dated Yarrabubba crater in Western Australia extends Earth’s impact record by more than 200 million years.
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Earth
Volcanic gas bursts probably didn’t kill off the dinosaurs
A new timeline for massive bursts of volcanic gases suggests the Deccan Traps eruptions weren’t the real dinosaur killer 66 million years ago.
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Earth
2019 was the second-warmest year on record
2019 was the second-warmest year on record, ending a decade that topped 140 years of heat records.
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Life
The ‘Blob,’ a massive marine heat wave, led to an unprecedented seabird die-off
Scientists have linked thousands of dead common murres in 2015–2016 to food web changes caused by a long-lasting marine heat wave nicknamed the Blob.
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Archaeology
After the Notre Dame fire, scientists get a glimpse of the cathedral’s origins
Researchers will tackle the scientific questions behind rebuilding Notre Dame, and learn more about its history.