News

  1. Physics

    Raw chicken, ingenuity make a time-reversal mirror

    A new phase-conjugation mirror sends light waves back where they came from, allowing physicists to reconstruct images even if the original light was severely scrambled.

    By Andrew Grant
  2. Health & Medicine

    Study finds benefits from lowering blood pressure, but questions remain

    Preliminary results from NIH clinical trial suggest that lower blood pressure is better, but scientists have not yet published the data and open questions remain.

    By Meghan Rosen
  3. Life

    Old stem cell barriers fade away

    Barrier that keeps aging factors out of stem cells breaks down with age.

    By Tina Hesman Saey
  4. Science & Society

    Rocky families, not same-sex parents, blamed for kids’ troubles in adulthood

    Range of adult problems linked to childhood family changes, not gay parents.