News

  1. Health & Medicine

    Brain Sabotage: Alzheimer’s protein may spawn miniseizures

    Amyloid-beta, a protein implicated in Alzheimer's disease, causes misfiring of neurons and minor brain seizures in mice.

    By Nathan Seppa
  2. Earth

    Grazing on the Periodic Table: Some ancient microorganisms lived on a diet of pure sulfur

    Microorganisms that lived 3.5 billion years ago obtained energy by metabolizing pure sulfur.

    By Sid Perkins
  3. Health & Medicine

    Debate Renewed: Diabetes drug ups heart risk

    A popular diabetes drug significantly increases the risk of heart failure and heart attack in those who take it.

    By Brian Vastag
  4. Animals

    Fish Switch: Salmon make baby trout after species, sex swap

    Salmon implanted with trout reproductive tissue bred to produce a generation of normal rainbow trout.