Nikk Ogasa is a staff writer who focuses on the physical sciences for Science News, based in Tucson, Arizona. He has a master's degree in geology from McGill University, where he studied how ancient earthquakes helped form large gold deposits. He earned another master's degree in science communication from the University of California, Santa Cruz. His stories have been published in ScienceScientific American, Mongabay and the Mercury News, and he was the summer 2021 science writing intern at Science News.

All Stories by Nikk Ogasa

  1. Earth

    Ancient zircons offer insights into earthquakes of the past

    Analyzing zircons’ chemical makeup can help expose intense quakes from the past and improve our understanding of the physics of today’s tremors.

  2. Ecosystems

    Just 3 ingredients can quickly destroy widely used PFAS ‘forever chemicals’

    Ultraviolet light, sulfite and iodide break down enduring PFAS molecules faster and more thoroughly than other UV-based methods.

  3. Science & Society

    Mass shootings and gun violence in the United States are increasing

    In the wake of mass shootings in Buffalo, N.Y., and Uvalde, Texas, a gun violence researcher shares what can be done to reduce gun violence deaths.

  4. Ecosystems

    Biocrusts reduce global dust emissions by 60 percent

    Lichens and other microbes construct biological soil crusts that concentrate nutrients and slash global dust emissions.

  5. Agriculture

    Oat and soy milks are planet friendly, but not as nutritious as cow milk

    Plant-based milks are better for the environment, but nutrition-wise they fall behind cow milk.

  6. Planetary Science

    Lava and frost may form the mysterious lumps on Jupiter’s moon Io

    Jets of gas released when hot meets cold on the volcanic moon Io could generate sprawling fields of dunes, a study finds.

  7. Earth

    Ancient zircons may record the dawn of plate tectonics

    A change in gemstone composition starting about 3.8 billion years ago may offer the earliest record of one tectonic plate sliding over another.

  8. Animals

    Leeches expose wildlife’s whereabouts and may aid conservation efforts

    DNA from the blood meals of more than 30,000 leeches shows how animals use the protected Ailaoshan Nature Reserve in China.

  9. Climate

    A UN report says stopping climate change is possible but action is needed now

    We already have a broad array of tools to reduce global greenhouse gas emissions in half by 2030, a new report finds. Now we just have to use them.

  10. Climate

    Forests help reduce global warming in more ways than one

    Trees are often touted as bulwarks against climate change for their capacity to sequester carbon, but that’s just one part of the story.

  11. Planetary Science

    Diamonds may stud Mercury’s crust

    Billions of years of meteorite impacts may have flash-baked much of a primitive graphite crust into precious gemstones.

  12. Climate

    A UN report shows climate change’s escalating toll on people and nature

    The latest United Nations' IPCC climate change report underscores the urgent need for action to avoid the worst consequences of global warming.