News

  1. Archaeology

    Ancient people may have survived desert droughts by melting ice in lava tubes

    Bands of charcoal from fires lit long ago, found in an ice core from a New Mexico cave, correspond to five periods of drought over 800 years.

    By Rachel Fritts
  2. Health & Medicine

    Here’s what you need to know about the COVID-19 vaccines

    There are still important unknowns about how Pfizer’s vaccine and others will work once they get injected in people around the world.

    By Tina Hesman Saey and Jonathan Lambert
  3. Space

    Hayabusa2’s asteroid dirt may hold clues to the early solar system

    “We collected the treasure box,” a Japanese space scientist announced after a capsule holding samples from asteroid Ryugu safely landed on Earth.