NYT > Science


    News Analysis: Yes, Aaron Hernandez Suffered Brain Injury. But That May Not Explain His Violence.

    News Analysis: Yes, Aaron Hernandez Suffered Brain Injury. But That May Not Explain His Violence.


    A combination of photos showing sections from a normal brain, top, and from the brain of former University of Texas football player Greg Ploetz, bottom, who had Stage IV chronic traumatic encephalopathy, or C.T.E. An autopsy of former New England...

    The links between biology and behavior are complex, and a number of factors contribute to violence. Yet evidence is mounting that C.T.E. may be involved.
    Trilobites: Sputnik for Sale, if You’ll Settle for a Beeping Replica

    Trilobites: Sputnik for Sale, if You’ll Settle for a Beeping Replica


    A full-scale replica of the Sputnik satellite will be auctioned next week, and comes complete with a vintage East German radio receiver to hear its...

    Just ahead of the 60th anniversary of the first Earth launch of a satellite, an auction house will take bids on a replica of the shiny Soviet spacecraft.
    Basics: Birds Beware: The Praying Mantis Wants Your Brain

    Basics: Birds Beware: The Praying Mantis Wants Your Brain


    A praying mantis outfitted with 3-D glasses during an experiment to determine whether the insects see in three dimensions. The conclusion:...

    Scientists have developed a healthy respect for mantises, acrobatic hunters with 3-D vision and voracious appetites.

    How Dogs Recognize Their Scents — And Selves


    Dogs appear to know their own scent in a test involving samples of urine. Is that the same as recognizing oneself in a...

    Dogs appear to know their own scent in a test involving samples of urine. Is that the same as recognizing oneself in a mirror?
    A Glowing Cotton Study That Might Have Deserved Less Glowing Reviews

    A Glowing Cotton Study That Might Have Deserved Less Glowing Reviews


    A microscopic image of fluorescent cotton fibers that were part of a study published in Science. Some experts in cotton biology questioned the paper’s...

    Cotton experts were not impressed with a recent study published by scientists who claimed they created naturally glowing and magnetic cotton.
    Building a Better Coral Reef

    Building a Better Coral Reef


    Neal Cantin collected coral samples from Rib Reef, a section of the Great Barrier Reef off Queensland,...

    As reefs die off, researchers want to breed the world’s hardiest corals in labs and return them to the sea to multiply. The effort raises scientific and ethical questions.
    Trilobites: For Neanderthals, Growing Big Brains Took More Time

    Trilobites: For Neanderthals, Growing Big Brains Took More Time


    The skeleton of an 8-year-old Neanderthal boy recovered from the El Sidrón cave in...

    New research suggests that the brain of a juvenile Neanderthal developed more slowly than that of a similarly aged Homo sapiens child, but scientists don’t yet know why.
    Trilobites: How Three Friends Proved That Jellyfish Can Sleep

    Trilobites: How Three Friends Proved That Jellyfish Can Sleep


    The Cassiopea, or upside-down, jellyfish, demonstrated patterns of behavior consistent with sleep, according to an experiment conducted by Caltech graduate...

    What started as a midnight excursion of curious graduate students turned into a study with implications for basic questions about sleep.
    Wild Bison Killed After Wandering Across Border Into Germany

    Wild Bison Killed After Wandering Across Border Into Germany


    European bison near the town of Bad Berleburg, Germany, in...

    A local official ordered hunters to kill the rare animal last week after it crossed over from Poland. “Animals don’t know country borders,” a conservationist said.
    How to Hack Your Brain (for $5,000)

    How to Hack Your Brain (for $5,000)


    Jamie Wheal speaking to participants on the last night of Flow Camp in the “Flow Dojo” at Powder Mountain,...

    The new, new, new age is all about “defragging our nervous systems.”
    Dr. Edmond Eger II, 86, Dies; Found Way to Make Anesthesia Safer

    Dr. Edmond Eger II, 86, Dies; Found Way to Make Anesthesia Safer


    Dr. Edmond I. Eger II in 2007 at Massachusetts General Hospital with a painting depicting the first public demonstration of ether...

    Dr. Eger and colleagues developed a technique to determine the proper dosage of anesthesia in operating rooms all over the world, saving an untold number of lives.
    Mexicans Dig Through Quake Rubble as Death Toll Passes 200

    Mexicans Dig Through Quake Rubble as Death Toll Passes 200


    Dozens of buildings collapsed in Mexico City. “The priority at this moment is to keep rescuing people who are still trapped and to give medical attention to the injured people,” Mexico’s president...

    Thousands of rescue workers plunged into the shattered shells of homes and offices. Officials said the priority is to keep saving people.
    How Can U.S. States Fight Climate Change if Trump Quits the Paris Accord?

    How Can U.S. States Fight Climate Change if Trump Quits the Paris Accord?


    Wind turbines near Block Island, R.I. Historically, the federal government has led the way in researching and developing technologies like wind and solar...

    Fourteen states have vowed to uphold the Paris climate pact with or without the federal government, and a new analysis suggests their efforts are having an impact.
    Why Mexico Is So Prone to Strong Earthquakes

    Why Mexico Is So Prone to Strong Earthquakes


    Rescuers worked on a collapsed building in the Condesa neighborhood in Mexico City on...

    Two powerful quakes, 12 days apart, have killed hundreds of people in Mexico this month. We look at how, where and why the big ones happen.
    Chemical Industry Ally Faces Critics in Bid for Top E.P.A. Post

    Chemical Industry Ally Faces Critics in Bid for Top E.P.A. Post


    Michael L. Dourson, nominated by President Trump to oversee the Environmental Protection Agency’s chemical safety programs, was on Capitol Hill last week. Mr. Dourson has spent years helping companies fight restrictions on the use of potentially toxic...

    Michael L. Dourson, who has long run a premier firm for the chemical industry, is set for a confirmation hearing before a Senate panel.
    Islands Seek International Funding for Hurricane Recovery

    Islands Seek International Funding for Hurricane Recovery


    President Danilo Medina of the Dominican Republic at the United Nations on Monday. Mr. Medina and other Caribbean leaders are calling for money to help recover from devastating storms linked to climate...

    In a special United Nations session, leaders of islands battered by hurricanes made worse by climate change appealed to wealthy countries for aid.
    Como a Grande Indústria Viciou o Brasil em Junk Food

    Como a Grande Indústria Viciou o Brasil em Junk Food


    Celene da Silva e a filha Sabrina entregam produtos Nestlé em Fortaleza,...

    À medida que o crescimento diminui nos países ricos, as empresas de alimentos ocidentais se expandem acintosamente nos países em desenvolvimento, contribuindo para obesidade e problemas de saúde.
    The 2017 Hurricane Season Really Is More Intense Than Normal

    The 2017 Hurricane Season Really Is More Intense Than Normal


    On Sept. 8, three storms threatened land: from left, Tropical Storm Katia, Hurricane Irma and Tropical Storm Jose, which would intensify into a hurricane. Eric Blake, a scientist at the National Hurricane Center, tweeted, “Never seen anything like this...

    It’s not your imagination. From Harvey to Irma to Jose to Maria, this year’s Atlantic hurricane season “has been an overachiever by almost every index.”
    Jellyfish Seek Italy’s Warming Seas. Can’t Beat ’Em? Eat ’Em.

    Jellyfish Seek Italy’s Warming Seas. Can’t Beat ’Em? Eat ’Em.


    A beach at the end of vacation season in Madonna di Roca Vecchia, Italy. Jellyfish blooms can cost millions of euros a year in lost...

    With climate change, jellyfish are booming in the Mediterranean, to the point that researchers say there may be little to do but to live with them.
    U.S. Governors at U.N. Assembly: ‘You Have Allies’ on Climate Change

    U.S. Governors at U.N. Assembly: ‘You Have Allies’ on Climate Change


    Gov. Jerry Brown of California at a conference on electric vehicles in Beijing in June. He is one of several United States governors pledging to work with world leaders on climate change, whatever the federal government decides to...

    As world leaders gather at the United Nations for the world body’s annual General Assembly, a group of American state governors is taking an increasingly high-profile role on climate change.
    Amid Opioid Crisis, Insurers Restrict Pricey, Less Addictive Painkillers

    Amid Opioid Crisis, Insurers Restrict Pricey, Less Addictive Painkillers


    Alisa Erkes had to switch to long-acting morphine after her insurance company stopped covering the less risky pain reliever she took for chronic abdominal...

    Drug companies and doctors have been accused of fueling the opioid crisis, but some question whether insurers have played a role, too.
    In Mexico, Weavers Embrace Natural Alternatives to Toxic Dyes

    In Mexico, Weavers Embrace Natural Alternatives to Toxic Dyes


    Juana Gutiérrez Contreras in her family’s workshop in Teotitlán del Valle, known for its hand-woven rugs and other textiles. The Gutiérrez family works to preserve traditional plant and insect...

    Concerned about the health impacts of textile chemicals, traditional artisans are producing vivid colors from crushed insects and forest plants.
    Trump Adviser Tells Ministers U.S. Will Leave Paris Climate Accord

    Trump Adviser Tells Ministers U.S. Will Leave Paris Climate Accord


    Gary D. Cohn, the White House economic adviser, reaffirmed to a number of foreign ministers on Monday the United States’ intention to withdraw from the Paris climate...

    Gary D. Cohn, the White House economic adviser, said at the United Nations that the Trump administration would pull out of the Paris deal unless it was revised.
    By Degrees: The Real Unknown of Climate Change: Our Behavior

    By Degrees: The Real Unknown of Climate Change: Our Behavior


    Receding floodwaters from Hurricane Harvey in Port Arthur, Tex. Urgent warnings from meteorologists of the hurricane’s dangers went unheeded by...

    Scientific predictions about Earth’s sensitivity to greenhouse gases have generally held up. But no one can predict how much more carbon pollution people will choose to pump out.
    Trilobites: Three Planets Will Slide Behind the Moon in an Occultation

    Trilobites: Three Planets Will Slide Behind the Moon in an Occultation


    The moon over Kiev, Ukraine, early on Monday, with the planet Venus just above it. Early this week, the moon momentarily obscured a sequence of three planets in what is known as a lunar...

    The moon will momentarily block Venus, then Mars and then Mercury, offering a vivid reminder of the cosmic clockwork of our solar system.
    British Press Watchdog Says Climate Change Article Was Faulty

    British Press Watchdog Says Climate Change Article Was Faulty


    John J. Bates, a retired government scientist, at his home in Arden, N.C. His criticism of a former boss resulted in a furor among climate change...

    The Mail on Sunday was forced to issue a note saying an article asserting that U.S. researchers had manipulated data was inaccurate.