News

  1. Physics

    Sharper than expected

    A new technique beats the resolution limits of ordinary microscopes in a way that seems to defy conventional optical theory.

    By Davide Castelvecchi
  2. Tech

    Tractor beam

    Magnetic nanoparticles selectively bind to specific bacteria and can drag them out of a liquid.

    By Davide Castelvecchi
  3. Humans

    Strategies to improve teaching

    Incorporating emerging data on how kids learn and cement ideas could help schools teach science more effectively, a new report argues.

    By Janet Raloff
  4. Health & Medicine

    Putting tumors on pause

    Keeping benign breast tumors from progressing into a malignant cancer can be achieved in mice by reducing a signaling protein.