News

  1. Paleontology

    3.42-billion-year-old fossil threads may be the oldest known archaea microbes

    The structure and chemistry of these ancient cell-like fossils may hint where Earth’s early inhabitants evolved and how they got their energy.

    By Carolyn Wilke
  2. Health & Medicine

    What experts know so far about COVID-19 boosters for immunocompromised people

    Some immunocompromised people remain at risk for severe COVID-19 despite being vaccinated. Studies hint that an additional vaccine dose might help.

    By Erin Garcia de Jesús
  3. Space

    How do scientists calculate the age of a star?

    There are a few different methods to determine the age of a star, but none are perfect.

    By Lisa Grossman and Helen Thompson
  4. Anthropology

    A partial skeleton reveals the world’s oldest known shark attack

    An ancient shark bite victim died quickly, before his body was recovered and buried, a new study finds.