Trilobites
Why a 3-Legged Lion and His Brother Swam Across a Crocodile-Filled River
Researchers say the nearly mile-long swim was the longest by big cats ever recorded.
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Science
Highlights
CreditAlex Braczkowski Mars Got Cooked by a Recent Solar Storm
Days after light shows filled Earth’s skies with wonder, the red planet was hit by another powerful outburst of the sun.
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CreditNASA/University of Colorado/LASP Ancient Genomes Reveal Which Children the Maya Selected for Sacrifice
Thousand-year-old DNA from Chichén Itzá offers eye-opening details of the religious rituals of ancient Maya.
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CreditFred Ihrt/LightRocket, via Getty Images A Tale of Two Nearly Extinct Giant Salamanders
While trying to save large amphibians native to Japan, herpetologists in the country unexpectedly found a way to potentially save an even bigger species in China.
By Rachel Nuwer and
CreditChang W. Lee/The New York Times
A Big Whack That Made the Moon May Have Also Created Continents That Move
Computer simulations suggest that a collision with another planetary object early in Earth’s history may have provided the heat to set off plate tectonics.
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CreditHernán Cañellas Trilobites3 Days in Space Were Enough to Change 4 Astronauts’ Bodies and Minds
An extensive examination of medical data gathered from the private Inspiration4 mission in 2021 revealed temporary cognitive declines and genetic changes in the crew.
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CreditSpaceX Edward Stone, 88, Physicist Who Oversaw Voyager Missions, Is Dead
He helped send the twin spacecraft on their way in 1977. Decades and billions of miles later, they are still probing — “Earth’s ambassadors to the stars,” as he put it.
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CreditMario de Lopez for Caltech Was This Sea Creature Our Ancestor? Scientists Turn a Famous Fossil on Its Head.
Researchers have long assumed that a tube in the famous Pikaia fossil ran along the animal’s back. But a new study turned the fossil upside down.
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CreditMussini et al., Current Biology 2024 OriginsVoyager 1, After Major Malfunction, Is Back From the Brink, NASA Says
The farthest man-made object in space had been feared lost forever after a computer problem in November effectively rendered the 46-year-old probe useless.
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CreditNASA, via Associated Press
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Trilobites
More in Trilobites ›Every Elephant Has Its Own Name, Study Suggests
An analysis of elephant calls using an artificial intelligence tool suggests that the animals may use and respond to individualized rumbles.
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CreditGeorge Wittemyer How Wombats May Save Other Animals From Wildfires
They build extensive burrow networks and don’t seem to mind when other woodland creatures use them as flameproof bunkers.
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CreditDean Lewins/EPA, via Shutterstock Unconventional Sex Let Anglerfish Conquer the Deep Ocean
During a chaotic period some 50 million years ago, the strange deep-sea creatures left the ocean bottom and thrived by clamping onto their mates.
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CreditSolvin Zankl/mauritius images GmbH, via Alamy Ancient Skull With Brain Cancer Preserves Clues to Egyptian Medicine
Cuts in the cranium, which is more than 4,000 years old, hint that people in the ancient civilization attempted to treat a scourge that persists today.
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CreditTondini, Isidro, Camarós, 2024 How the Cockroach Took Over the World
A genetic analysis of the German cockroach explained its rise in southern Asia millenniums ago, and how it eventually turned up in your kitchen.
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CreditErik Karits/Alamy
Origins
More in Origins ›Scientists Find the Largest Known Genome Inside a Small Plant
A fern from a Pacific island carries 50 times as much DNA as humans do.
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CreditOriane Hidalgo Scientists Calculated the Energy Needed to Carry a Baby. Shocker: It’s a Lot.
In humans, the energetic cost of pregnancy is about 50,000 dietary calories — far higher than previously believed, a new study found.
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CreditDr. G. Moscoso/Science Source In a new study, researchers found universal features of songs across many cultures, suggesting that music evolved in our distant ancestors.
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CreditAlbum/Alamy What Makes a Society More Resilient? Frequent Hardship.
Comparing 30,000 years of human history, researchers found that surviving famine, war or climate change helps groups recover more quickly from future shocks.
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CreditWirestock, Inc., via Alamy ¿Por qué las mujeres padecen más enfermedades autoinmunes? Un estudio apunta al cromosoma X
Las moléculas que se adhieren al segundo cromosoma X de las mujeres lo silencian y pueden confundir al sistema inmunitario, según un nuevo estudio.
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CreditBiophoto Associates/Science Source
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Climate and Environment
More in Climate and Environment ›Dozens of Groups Push FEMA to Recognize Extreme Heat as a ‘Major Disaster’
The labor and environmental groups are pushing the change so relief funds can be used in more situations.
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CreditCarlos Barria/Reuters Recycling Is Broken. Should I Even Bother?
Every little bit helps. But doing it wrong can actually make matters worse.
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CreditNaomi Anderson-Subryan Trump Once Promised to Revive Coal. Now, He Rarely Mentions It.
In earlier races for the White House, he pledged to get miners back to work. Now, political and economic realities have shifted.
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CreditTy Wright for The New York Times El Niño Is Over. What Does That Mean for Summer?
The NOAA Climate Prediction Center announced an end to the El Niño climate phenomenon on Thursday, and predicted that La Niña could start as early as next month.
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CreditRebecca Blackwell/Associated Press As Solar Power Surges, U.S. Wind Is in Trouble
A 2022 climate law was expected to set off a boom in renewable energy. So far, that’s only come partly true.
By Brad Plumer and
CreditThe New York Times
Bird Flu Is Infecting Cats (and the Occasional Dog). Here’s What to Know.
A few “reasonable precautions” can help people keep their pets safe from the H5N1 virus, experts say.
By Emily Anthes
How Long Does Rice Last in the Fridge? And Other Pressing Rice Questions, Answered
Don’t get sick this season.
By Kristen Miglore
A Bird-Flu Pandemic in People? Here’s What It Might Look Like.
There is no guarantee that a person-to-person virus would be benign, scientists say, and vaccines and treatments at hand may not be sufficient.
By Apoorva Mandavilli
Surgeon General Calls for Warning Labels on Social Media Platforms
Dr. Vivek Murthy said he would urge Congress to require a warning that social media use can harm teenagers’ mental health.
By Ellen Barry and Cecilia Kang
Global HealthMore Women in Africa Are Using Long-Acting Contraception, Changing Lives
Methods such as hormonal implants and injections are reaching remote areas, providing more discretion and autonomy.
By Stephanie Nolen and Natalija Gormalova
Pregnant, Addicted and Fighting the Pull of Drugs
Many pregnant women who struggle with drugs put off prenatal care, feeling ashamed and judged. But as fatal overdoses rise, some clinics see pregnancy as an ideal time to help them confront addiction.
By Jan Hoffman and Ilana Panich-Linsman
Medical Experts Alarmed by Out-of-Hospital Cesareans in Florida
A new state law will permit surgeons to perform cesarean deliveries in “advanced birth centers,” despite the risk of complications.
By Roni Caryn Rabin
Edward Stone, 88, Physicist Who Oversaw Voyager Missions, Is Dead
He helped send the twin spacecraft on their way in 1977. Decades and billions of miles later, they are still probing — “Earth’s ambassadors to the stars,” as he put it.
By Sam Roberts
In Homes With Children, Even Loaded Guns Are Often Left Unsecured
Firearms often are not stored safely in U.S. homes, a federal survey found. At the same time, gun-related suicides and injuries to children are on the rise.
By Teddy Rosenbluth
Wreckage of Shackleton’s Last Ship Is Found Off Coast of Canada
Ernest Shackleton was sailing for Antarctica on the ship, called the Quest, when he died in 1922. Researchers exulted over the discovery of its wreckage, 62 years after it sank in the Labrador Sea.
By Hank Sanders
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