The world is littered with trillions of micro- and nanoscopic pieces of plastic. These can be smaller than a virus—just the ...

A unit cell of polyethylene showing the long, parallel macromolecules that pass through many such unit cells. The cell has an orthorhombic structure. The molecular sections shown may be different ...

Engineer Guy Bill Hammack explained the ingenious design behind a recyclable two liter PET plastic soda bottle.