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Your search has returned 111227 articles:
  • Transparency Project

    How we reported a controversial story about the day the dinosaurs died

    This is part of the Transparency Project. Learn more about the project here. This article refers to a story originally published in April 2019, “New fossils may capture the minutes after the dinosaur-killing asteroid impact.”

    How did you find this story?

    This was an unusual story for us because it was based not only on a research paper published in a scientific journal, which is the type...

    04/26/2019 - 12:24 Science & Society
  • Transparency Project

    Introducing the Transparency Project

    Here at Science News we work hard to make sure that our coverage of the latest advances in science, medicine and technology is clear, accurate and comprehensive. But we realize that what’s clear to us about how we do science journalism may not be clear to our readers. And we want to be open and accountable about that process.

    So we’re launching the Transparency Project. In the coming...

    04/26/2019 - 12:23 Science & Society
  • News in Brief

    Pictures confirm Hayabusa2 made a crater in asteroid Ryugu

    Hayabusa2 has successfully blasted a crater into the asteroid Ryugu. On April 25 Japan time, the spacecraft flew over the spot where it had dropped a projectile three weeks earlier and took pictures of the impact (SN Online: 4/5/19).

    “We have confirmed that an artificial crater was created,” JAXA, Japan’s space agency, reports based on a comparison of before and after images. “The size...

    04/26/2019 - 12:09 Planetary Science
  • Reviews & Previews

    A mathematician traces his journey from poverty to prominence

    The Shape of a LifeShing-Tung Yau and Steve NadisYale Univ., $28

    One of the first remarkable things that mathematician Shing-Tung Yau reveals in his memoir, The Shape of a Life, is that his name was not originally Yau. His family fled China to British-ruled Hong Kong in 1949 when he was an infant, and the name Yau came from a mistranslation on a registration form when he entered...

    04/26/2019 - 09:00 Numbers, Science & Society
  • News

    Endangered green sea turtles may be making a comeback in the U.S. Pacific

    Beleaguered populations of green sea turtles living in and around Hawaii and American Pacific island territories are increasing in number. 

    From 2002 to 2015, scuba diving researchers circumnavigated 53 islands, atolls and coral reefs throughout the U.S. Pacific, conducting the first comprehensive survey in that region of the turtles’ ocean habitats. Over the 13 years, the divers counted...

    04/26/2019 - 07:00 Animals, Ecosystems, Oceans
  • News

    A lack of circular RNAs may trigger lupus

    A lack of certain mysterious genetic molecules may spin the immune system out of control and lead to lupus.

    People with lupus have lower than normal levels of circular RNAs, triggering an immune reaction meant to fight viruses, biochemist Lingling Chen of the Shanghai Institute of Biochemistry and Cell Biology and her colleagues discovered. Switching on the body’s virus-fighting...

    04/25/2019 - 11:00 Genetics, Biomedicine
  • News

    A global survey finds that the Arctic Ocean is a hot spot for viruses

    Arctic waters turn out to be teeming with some of the world’s smallest entities — viruses.

    Water samples taken during a three-year expedition around the world’s oceans identified around 200,000 virus species, roughly 12 times the number found in a previous smaller survey. And 42 percent of those viruses were found exclusively in the Arctic, researchers report April 25 in Cell.

    The...

    04/25/2019 - 11:00 Microbes, Oceans, Ecology
  • 50 years ago, scientists fought over element 104’s discovery

    Another route to 104 —

    In 1964, a few radioactive atoms existed for three-tenths of a second in a Soviet laboratory, and G.N. Flerov and his colleagues, who detected it, announced the discovery of element 104. But the announcement was met with skepticism in the United States.… Now, U.S. scientists declare they have gone their own route to corral the elusive element. — Science News,...

    04/25/2019 - 07:00 Chemistry, Physics
  • News

    U.S. measles cases hit a record high since the disease was eliminated in 2000

    U.S. measles cases have soared to the highest number since the disease was declared eliminated in the country in 2000. The 2019 tally now stands at 695 cases, the U.S. Centers for Disease Control and Prevention reports. That surpasses the previous high of 667 cases in 2014.

    “The high number of cases in 2019 is primarily the result of a few large outbreaks — one in Washington State and...

    04/24/2019 - 20:05 Health
  • News in Brief

    A marine parasite’s mitochondria lack DNA but still churn out energy

    One parasite that feeds on algae is so voracious that it even stole its own mitochondria’s DNA.

    Mitochondria — the energy-generating parts of cells — of the parasitic plankton Amoebophyra ceratii seem to have transferred all of their DNA to the cell’s nucleus, researchers report April 24 in Science Advances. The discovery is the first time that scientists have found an oxygen-using...

    04/24/2019 - 14:52 Genetics, Microbes