NASA Gives ‘All Clear’ for Asteroid That Seemed to Threaten Earth
The odds that the space rock, 2024 YR4, will smash into our planet in 2032 have dropped to nearly zero, leading astronomers to conclude that we are no longer in danger.
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The odds that the space rock, 2024 YR4, will smash into our planet in 2032 have dropped to nearly zero, leading astronomers to conclude that we are no longer in danger.
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With Mercury joining the show, all seven of Earth’s celestial neighbors will be present at dusk this week.
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On Rum, Europe’s newest dark-sky sanctuary, the island’s 40 residents have learned to embrace darkness.
By Nicholas J. R. White and

The dream of mining metals in deep space crashed and burned in the 2010s. AstroForge’s Odin mission to survey a potentially metallic asteroid is packed and ready to lift off.
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A Boneyard Along the Thames River Reveals London’s Ancient Burials
Researchers have found dozens of human bones on the banks of the iconic river, many of them thousands of years old.
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Trillions of Viruses Live in Your Body. A.I. Is Trying to Find Them.
The Human Virome Program will analyze samples from thousands of volunteers in an effort to understand how viruses affect health.
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A Rare ‘Doomsday’ Fish Is Spotted Swimming in Mexico
Oarfish are rarely documented by scientists, but one was seen this month by a group visiting a beach in Mexico.
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Microsoft Says It Has Created a New State of Matter to Power Quantum Computers
Microsoft’s new “topological qubit” is not based on a solid, liquid or gas. It is another phase of matter that many experts did not think was possible.
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Louis Pasteur’s Relentless Hunt for Germs Floating in the Air
In 19th-century France, the young chemist challenged the theory of spontaneous generation and discovered an invisible world of airborne microbes.
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The Gene That Made Mice Squeak Strangely
A new study suggests that the NOVA1 gene may have been a key player in the evolution of human language.
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Ancient DNA Points to Origins of Indo-European Language
A new study claims to have identified the first speakers of Indo-European language, which gave rise to English, Sanskrit and hundreds of others.
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Lurking Inside an Asteroid: Life’s Ingredients
Scientists studying samples that NASA collected from the asteroid Bennu found a wide assortment of organic molecules that shed light on how life arose.
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Oldest Human Genomes Reveal How a Small Group Burst Out of Africa
DNA from European fossils dating back 45,000 years offers new clues to how our species spread across the world.
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Mammoth: It’s What Was for Dinner
A study of a 12,800-year-old skull of a toddler offers a glimpse at how early Americans found food, and how their hunts may have led to a mass extinction.
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Hummingbirds Living in a Hive Found for the First Time
In a remote mountain cave in Ecuador, hummingbirds were discovered sleeping and nesting together.
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Lasers, Waffle Fries and the Secrets in Pterosaurs’ Tails
Scientists identified new structures in the tail vanes of the prehistoric flying reptiles.
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This City’s Sewer System Is Full of Alligators, but It’s Not New York
Researchers found crocodilians, bats, raccoons and other creatures prowling a Florida town’s storm drains, “like something out of ‘Teenage Mutant Ninja Turtles,’” one said.
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Birds of Paradise Glow on Mating Parade
The always colorful males light up with biofluorescence, sending off signals.
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Scared of Spiders? Also Scared of Zombies? We Have Some Bad News.
A BBC documentary crew in Northern Ireland stumbled upon a fungus that hijacks spiders in an arachnid version of “The Last of Us.”
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She Lobbied for a Carcinogen. Now She’s at the E.P.A., Approving New Chemicals.
Lynn Dekleva, who recently took a senior role at the agency, once led an aggressive effort by industry to block regulations on formaldehyde.
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The World Bank Pivoted to Climate. That Now May Be a Problem.
The Trump administration’s deep cuts to clean-energy programs are raising concerns about U.S. commitments to the lender.
By Max Bearak and

How Far Do Trump’s Cuts to Science Reach? To the Ends of the Earth.
The National Science Foundation has fired workers at the office that manages polar research, raising fears about a reduced U.S. presence in two strategic regions.
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How Can I Lower My Climate Risk When Buying a House?
The danger from extreme weather is growing, and so are insurance costs. Here’s what to know.
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Hit by Wildfire? Here’s How to Deal With Insurers and FEMA.
You don’t need to settle for what your insurance company or the government first offers. And you don’t have to fight alone.
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The terminations, which hit agencies involved in protecting the nation’s food supply and agricultural products, could have long-lasting consequences, experts said.
By Emily Anthes and Apoorva Mandavilli

Federal regulators will no longer require patients to provide blood tests before receiving the drug from pharmacies.
By Ellen Barry

The outbreak has been traced, tentatively, to three children who ate a bat, the W.H.O. said, and known threats like Ebola and Marburg have been ruled out.
By Eve Sampson

How government cuts are slowing research.
By Benjamin Mueller

The agency changed course just days after firing employees who oversee the safety of food and life-sustaining medical devices. Dozens of workers said they and others were back at work Monday.
By Christina Jewett

Chatbots posing as therapists may encourage users to commit harmful acts, the nation’s largest psychological organization warned federal regulators.
By Ellen Barry

In a closely watched case, the owner of the Dakota Access Pipeline is claiming the environmental group masterminded protests that hurt the company’s business.
By Karen Zraick

When a gunman killed two of her students, Ivy Schamis was the only adult in the room. Her journey through guilt and healing sheds light on the impossible role of American teachers.
By Emily Baumgaertner Nunn

Elon Musk has drawn inspiration from his 2022 takeover of Twitter with the tactic. His threat on social media of termination did not appear in an email to federal workers requesting the work summaries.
By Kate Conger, Eileen Sullivan and Christina Jewett

Texas reported 90 cases this week, while New Mexico reported nine. A majority of the cases have been in a Texas county where vaccination rates have lagged behind the rest of the state.
By Isabella Kwai
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