How to Extract Gold from a Circuit Board - Bang Goes the Theory - BBC 

Jem Stansfield shows how it is possible to extract pure Gold from some old electronic circuit boards. Incredible clip from acclaimed BBC 1 science series, Bang Goes the Theory.
Investigating the science behind the headlines and making sense of the everyday issues that matter to us all. www.bbc.co.uk/p...
Subscribe to the BBC Worldwide channel: bit.ly/yqBWhy
This is a channel from BBC Studios who help fund new BBC programmes. Service information and feedback: www.bbcstudios...