News

  1. Oceans

    Before altering the air, microbes oxygenated large swaths of the sea

    Hundreds of millions of years before oxygen surged in the atmosphere 2.4 billion years ago, swaths of oxygen winked in and out of existence in the ocean.

    By Nikk Ogasa
  2. Archaeology

    British tin might have fueled the rise of some Bronze Age civilizations

    Chemical evidence of tin from coastal British sites reaching Bronze Age Mediterranean societies highlights a supply chain dispute.

    By Bruce Bower
  3. Health & Medicine

    Lining medical stents with hairlike fuzz could fend off infections

    Implanted tubes that transport bodily fluids can get gross. A lab prototype suggests a new vibration-based way to keep them clean and prevent infection.