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Your search has returned 1442 articles:
  • Science Stats

    Blame opioids for a fifth of young adult deaths in the United States

    Opioids have quickly become a major cause of death among young Americans aged 25 to 34, with one in five deaths in 2016 tied to the drugs, researchers report online June 1 in JAMA Open Network.

    That’s a steep rise from 2001, when opioids accounted for 4 percent of all deaths in that age group. The second-most affected age group was 15-24, for whom 12 percent of all deaths in 2016 were...

    06/01/2018 - 16:56 Health
  • Science Stats

    Synthetic opioids involved in more deaths than prescription opioids

    As opioid-related deaths rise in the United States, so has the role of synthetic opioids — primarily illicit fentanyl, mixed into heroin or made into counterfeit pills (SN Online: 3/29/18). In 2016, synthetics surged past prescription opioids and were involved in 19,413 deaths, compared with 17,087 deaths involving prescription opioids, researchers report May 1 in JAMA. The study is based on...

    05/01/2018 - 16:30 Health
  • News

    ‘Nanobot’ viruses tag and round up bacteria in food and water

    NEW ORLEANS — Viruses engineered into “nanobots” can find and separate bacteria from food or water.

    These viruses, called bacteriophages or just phages, naturally latch onto bacteria to infect them (SN: 7/12/03, p. 26). By tweaking the phages’ DNA and decking them out with magnetic nanoparticles, researchers created a tool that could both corral bacteria and force them to reveal...

    03/27/2018 - 11:36 Microbiology, Chemistry, Health
  • Mystery Solved

    Mix of metals in this Picasso sculpture provides clues to its mysterious origins

    AUSTIN, Texas — An analysis of the metals in dozens of Picasso’s bronze sculptures has traced the birthplace of a handful of the works of art to the outskirts of German-occupied Paris during World War II.

    This is the first time that the raw materials of Picasso’s sculptures have been scrutinized in detail, conservation scientist Francesca Casadio of the Art Institute of Chicago said...

    02/19/2018 - 06:00 Technology, Science & Society
  • News

    Baby macaques are the first primates to be cloned like Dolly the Sheep

    View the video

    Meet Zhong Zhong and Hua Hua, the first primates cloned by reprogramming adult cells.

    Two decades after Dolly the Sheep was successfully cloned (SN: 3/1/97, p. 132), Chinese researchers have used the same technique — somatic cell nuclear transfer — to clone two healthy baby macaque monkeys. The results, reported January 24 in Cell, could lead to more efficient...

    01/24/2018 - 13:30 Genetics, Animals, Biomedicine
  • Science & the Public

    Revisiting the science stories that made us cry, think and say ‘OMG’ in 2017

    Watch the SN staff sum up 2017

    Our Top 10 stories of 2017 cover the science that was earthshaking, field-advancing or otherwise important. But choosing our favorite stories requires some different metrics.

    Here are some of our staff’s favorites from 2017, selected for their intrigue, their power, their element of surprise — or because they were just really, really fun.

    Stories...
    12/27/2017 - 12:00 Science & Society
  • News

    In a tally of nerve cells in the outer wrinkles of the brain, a dog wins

    If more nerve cells mean more smarts, then dogs beat cats, paws down, a new study on carnivores shows. That harsh reality may shock some friends of felines, but scientists say the real surprises are inside the brains of less popular carnivores. Raccoon brains are packed with nerve cells, for instance, while brown bear brains are sorely lacking.

    By comparing the numbers of nerve cells, or...

    12/14/2017 - 09:00 Neuroscience, Animals
  • Rethink

    Bones show Dolly’s arthritis was normal for a sheep her age

    In the scientific version of her obituary, Dolly the Sheep was reported to have suffered from severe arthritis in her knees. The finding and Dolly’s early death from an infection led many researchers to think that cloning might cause animals to age prematurely.

    But new X-rays of Dolly’s skeleton and those of other cloned sheep and Dolly’s naturally conceived daughter Bonnie indicate that...

    11/23/2017 - 09:00 Genetics, Animals
  • News

    Face it: Sheep are just like us when it comes to recognizing people

    View the video

    Emma Watson, Jake Gyllenhaal, journalist Fiona Bruce and Barack Obama all walk into a sheep pen. No, this isn’t the beginning of a baaa-d joke.

    By training sheep using pictures of these celebrities, researchers from the University of Cambridge discovered that the animals are able to recognize familiar faces from 2-D images. Given a choice, the sheep picked the...

    11/07/2017 - 19:09 Animals
  • News

    Cracking the body clock code wins trio a Nobel Prize

    Discoveries about the molecular ups and downs of fruit flies’ daily lives have won Jeffrey C. Hall, Michael Rosbash and Michael W. Young the Nobel Prize in physiology or medicine.

    These three Americans were honored October 2 by the Nobel Assembly at the Karolinska Institute in Stockholm for their work in discovering important gears in the circadian clocks of animals. The trio will...

    10/02/2017 - 17:22 Physiology, Genetics, Cells