News

  1. Space

    A rare glimpse of a star before it went supernova defies expectations

    A hydrogen-free supernova in a nearby galaxy appears to have come from an unusual source.

    By Maria Temming
  2. Health & Medicine

    How a small city in Brazil may reveal how fast vaccines can curb COVID-19

    Almost all adults in Serrana, Brazil, got COVID-19 shots. That may help answer questions about how well vaccines will work to end the pandemic.

    By Meghie Rodrigues
  3. Health & Medicine

    Here’s what breakthrough infections reveal about COVID-19 vaccines

    Studies analyzing vaccinated people in the real world show that COVID-19 vaccines are extremely effective, but experts are keeping an eye on variants.