Uncategorized

  1. Space

    Salty water may have flowed near Mars’ equator as recently as 400,000 years ago

    Crusts and cracks on Martian sand dunes are a sign salty water flowed near the equator thousands, not billions, of years ago — and may still exist.

    By Allison Gasparini
  2. Health & Medicine

    WHO declares an end to the global COVID-19 public health emergency

    Global COVID-19 deaths are down and immunity is up. But with the virus here to stay, it’s time to shift to more long-term health measures.

    By McKenzie Prillaman
  3. Astronomy

    A streak of light may not be a black hole fleeing its galaxy after all

    A suspicious trail of starlight may just be a spiral galaxy seen edge on, not stars that formed in the wake of a runaway supermassive black hole.