If you could build anything in this world what would you create ?

Question: If you could build anything in this world what would you create ?
- Keywords:
  build,
  world
Asked by 693sptm37 to Guy on 9 Mar 2018.
- Guy Rixon answered on 9 Mar 2018:
  
  Definitely something to sort out global warming. I don’t know if a clever machine can do that (I suspect not), but I would really like to build one.

Question: If you could build anything in this world what would you create ?