Safety
- Episode aired Nov 9, 2005
- 29m
![Rough Science (2000)](https://m.media-amazon.com/images/M/MV5BMTgzMzE0MTkxOF5BMl5BanBnXkFtZTcwODc1ODkyMQ@@._V1_QL75_UY281_CR46,0,190,281_.jpg)
Jonathan and Mike are set the task of making a fire extinguisher, whilst Ellen and Hermione set about cleaning the polluted rivers.Jonathan and Mike are set the task of making a fire extinguisher, whilst Ellen and Hermione set about cleaning the polluted rivers.Jonathan and Mike are set the task of making a fire extinguisher, whilst Ellen and Hermione set about cleaning the polluted rivers.