Uncategorized

  1. Materials Science

    Anyone want to knit a microscopic sweater?

    Microscopic polymer tubes can tangle themselves into a new and possibly useful structure—tiny "yarn balls" that flatten out and partly unravel in an electric field.

    By Peter Weiss
  2. Paleontology

    Fossil birds sport a new kind of feather

    Two fossil specimens of a primitive, starling-size bird that lived about 125 million years ago have tail feathers that may hold the clues to how feathers originated.

    By Sid Perkins
  3. Earth

    Chalk reveals greatest underwater landslide

    Seismic waves generated by an extraterrestrial object crashing into Mexico 65 million years ago appear to have sent sediment from shallow waters sliding off the continental shelf.