A PhD student from Brunel University London has saved himself £100,000 by 'hacking' his own kit.

Adam Lynch created his own inverted microscope by adapting a cheap instrument he bought online.

Adam realised a USB microscope he had purchased could be clamped upside down on a table to produce the same images as its much more expensive official equivalent.

He estimates his invention cost around £160, but does not want to patent it because he believes science should be open source.

Today programme presenter James Naughtie spoke to Adam Lynch.

First broadcast on BBC Radio 4's Today programme on Tuesday 25 November.