How does spit make your shoes so shiny? A good polish needs more than just elbow grease, it needs your saliva too! We find out in this Question of the Week, and ask if it's possible to build a suit that lets you dance like a ballerina?
Information presented on this website is the opinion of the individual
contributors and does not reflect the general views of the administrators,
editors, moderators, sponsors, Cambridge University or the public at
large.