The graph colouring problem, a classic NP-hard challenge, is central to many practical applications such as scheduling, resource allocation and network management. Recent advances have seen the ...

The movement of waves, patterns that carry sound, light or heat, through materials has been widely studied by physicists, as ...

Plastic pervades modern life, and menstruation is no exception. Since the middle of the 20 th century, many tampons and menstrual pads have contained somewhere between a little and a lot of plastic in ...

Planet or Plastic? is National Geographic’s multiyear effort to raise awareness about the global plastic trash crisis. Come to this page often to learn more, and find out what you can do to reduce ...