1. Physics

    Bitty Beacon: Wee disks probe materials at microscales

    Illuminated by lasers, disks no larger than red blood cells can project rotating beams bright enough to create a light show in a darkened room.

  2. Physics

    Superconductor has odd electron pairing

    Although electrons pair up in many superconductors, there's one in which they join together in two different ways, new calculations confirm.

  3. Physics

    Clues to exotic particles found again

    Although a correction to theory last year watered down its results, further analysis of a muon experiment still provides hints of new subatomic particles.

  4. Materials Science

    What the mail must go through

    Mail irradiation in Washington, D.C. is damaging valuable objects and documents intended for scientific study or archiving at the Smithsonian, the White House, and other government organizations.

  5. Physics

    Manhandled molecules, midget memories

    A thick coating of organic chemicals can record information at densities potentially a million times greater than is possible with current compact disk technology.

  6. Materials Science

    A Cut above the Ordinary: Low-tech machining yields coveted nanostructure

    A new finding that machining of metals imparts a hard, fine-grained structure to turnings and other scraps may lead to less costly but more durable parts for cars and other applications.

  7. Physics

    Peer Pressure in Numbers: Physicists model the power of social sway

    A mathematical model of peer-influenced behavior may help explain some unexpected patterns that have been observed in financial data and bird populations.

  8. Physics

    Relativity and Gravitation

  9. Physics

    Violent chemistry saps sonobubble energy

    In liquids agitated by sound waves, imploding gas bubbles get cooled when atoms recombine, making the bubbles unlikely nuclear reactors.

  10. Physics

    Hunting for Higher Dimensions

    Inspired by recent theoretical insights, physicists at accelerators and gravitational laboratories are searching for clues to dimensions beyond the four dimensions of space-time.

  11. Physics

    Melting nuclei re-create Big Bang broth

    The seething primordial matter that existed in the first microseconds after the Big Bang may have briefly reappeared in fireballs created at a European particle accelerator.

  12. Materials Science

    Spinning Fine Threads: Silkworms coerced to make better silk

    The caterpillars that spin commercial silk can make tougher or more elastic threads, depending on how fast they're forced to spin.