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NYT > Science
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New Clue to How Matter Outlasted Antimatter at the Big Bang Is Found
Physicists working at the CERN particle physics lab said they detected a slight but significant difference in how particles of matter and antimatter decay.
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Ceratosaur Fossil Auctioned for $30.5 Million by Sothebyâs
The price paid for the juvenile specimen of the 150-million-year old predatory dinosaur is the third-highest on record.
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This Golden Fungus Is Spreading Wildly in North Americaâs Forests
The golden oyster mushroom, a tasty species native to Asia, has proliferated in states around the Great Lakes and may crowd out native species, a new study shows.
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Amid Devastating Winter Losses, Another Threat Looms For U.S. Beekeepers
The parasitic Tropilaelaps mite, which threatens honeybees and the food supply, isnât in North America. Yet.
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Videos From the Amazon Reveal an Unexpected Animal Friendship
Scientists are trying to understand footage that showed ocelots and opossums, usually predator and prey, hanging out together.
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Snakes Use Smelly Musk to Keep Ants Out of Their Pants
Forget fangs full of venom â the backsides of serpents pack secretions volatile enough to kill insect invaders.
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Apollo-Soyuz 50th Anniversary: A Handshake in Orbit That Transformed the Space Race
The Apollo-Soyuz Test Project brought Soviet cosmonauts and NASA astronauts together in the first international human spaceflight.
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Earth Is Spinning Faster, Making Some Summer Days Shorter
The planetâs rotation fluctuates as it travels around the sun, and measurements suggest weâre losing more than a millisecond during the long days of summer.
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How Much of Our âMath, Revealedâ Series Did You Retain? Try This Quiz.
Test your knowledge of taxicab geometry, triangular numbers, the golden ratio and more.
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The Westâs Megadrought Might Not Let Up for Decades, Study Suggests
Clues from another dry spell 6,000 years ago are helping scientists understand whatâs driving the latest one, and why itâs been so unrelenting.
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Upended by Meth, Some Communities Are Paying Users to Quit
Unlike with opioids, there is no medication to suppress cravings for meth and other stimulants. As use soars, hundreds of clinics are trying a radically different approach.
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H.H.S. Finalizes Thousands of Layoffs After Supreme Court Decision
Staff members who were first notified of terminations in April were finally let go late Monday.
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Trump Administration Will Limit Medicare Spending on Pricey Bandages
In an about-face, the administration is cracking down on so-called skin substitutes, overused treatments that cost Medicare more than $10 billion last year.
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How to Find the Right Medical Rehab Services
Specialized hospitals, nursing homes, clinics and home health agencies provide rehab therapy. Insurers may limit the services you can get.
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Even Grave Errors at Rehab Hospitals Go Unpenalized and Undisclosed
For-profit hospitals provide most inpatient physical therapy but tend to have worse readmission rates to general hospitals. Medicare doesnât tell consumers about troubling inspections.
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Arizona Governor Seeks Investigation of Federal Handling of Grand Canyon Fire
Gov. Katie Hobbs questioned why the U.S. government decided to manage the Dragon Bravo fire, which started with a lightning strike, as a âcontrolled burnâ during the height of the summer.
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South African AIDS Activist Pushes for H.I.V. Treatment Access After U.S.-Aid Cuts
Zackie Achmat, once at the center of South Africaâs push for lifesaving H.I.V. treatment, has come out of retirement as U.S. funding cuts and his own governmentâs inertia revive old fears.
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Arizona Resident Dies From Plague, Officials Say
The resident died from pneumonic plague, the first such death in Coconino County, Ariz., since 2007, the county said.
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Daniel Kleppner, Physicist Who Brought Precision to GPS, Dies at 92
He worked to develop an atomic clock that is essential to global positioning systems and helped confirm a rare state of matter predicted by Albert Einstein.
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Flash Floods Are the âHardest Kindâ of Disaster to Prevent, Experts Say
Scholars and designers of early warning systems say that there are still huge gaps in our ability to predict flash floods and warn those at risk.
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Denver Museum Finds a Dinosaur Fossil Under Its Parking Lot
The fossil, estimated to be about 70 million years old, was found during a drilling project.
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Ben Jealous, Sierra Clubâs Executive Director, on Leave After Rocky Tenure
Ben Jealous, who joined the environmental group in 2023, has clashed with some employees and the organizationâs union.
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RFK Jr. Cancels Meeting of Key Preventive Health Panel
The task force recommends which screenings and other preventive health measures must be covered by insurance.
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F.D.A. Posts Collection of Letters Outlining Concerns About New Drugs
The letters, many of which were already available online, detail why the regulators initially declined to approve some drugs. All eventually passed muster.
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Justice Dept. Demands Private Patient Info From Trans Youth Medicine Providers
Doctors and hospitals were subpoenaed for private information on gender-related care for minors, the latest move by the Trump administration to stop the treatments.
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This Jungle Plant Is a Good Landlord to Its Tenant Ants
While plants often have mutually beneficial relationships with insects, a tuber in Fiji grows separate compartments for multiple ant species.
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James B. Maas, Guru of Slumber and the âPower Nap,â Dies at 86
An author, public speaker and professor, he taught a hugely popular and entertaining psychology course at Cornell that focused on the essential importance of sleep.
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Trump Seeks to Cut Basic Scientific Research by Roughly One-Third, Report Shows
An analysis by the American Association for the Advancement of Science shows the impact of the administrationâs budget plan on the kind of studies that produce the most breakthroughs.
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Trumpâs D.E.I. Cuts Are Hurting Rural, White Americans, Too
The N.I.H. has terminated hundreds of diversity grants awarded to young researchers, many of whom come from the very places that supported Trump.
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Sonoran Desert Toads, With Their Psychedelic Powers, Appear to Be in Decline
New research suggests Sonoran Desert toads went into steep decline after stories of their mind-bending chemical properties began circulating among drug users.
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Maya Rulerâs Tomb Is Unearthed in Belize, With Clues to His Ancient World
A rare mosaic death mask made of jadeite and vessels in the shapes of an owl, a monkey and coatimundi were found with the ruler.
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Trump Names Sean Duffy as Interim Head of NASA
President Trump had pulled the nomination of a close associate of Elon Musk to lead the agency in May. The decision fueled a public breakdown of their alliance.
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