How to Extract Gold from a Circuit Board Earth Sciences

You can make gold appear from something that isn't gold… And that's chemistry, not alchemy!
subscribe: http://bit.ly/SubscribeToEarthLab

All the best Earth Science videos http://bit.ly/EarthLabOriginals
The Best BBC Earth Videos http://bit.ly/TheBestOfBBCEarthVideos
The Doctors are in the House http://bit.ly/TheDoctorsAreInTheHouse
Best of Earth Videos http://bit.ly/BestOfEarthUnpluggedVideos

Bang goes theory series 5
With family stories, spectacular stunts and competitive team challenges, the series is hosted by a gang of presenters who are passionate about science and happy to share their knowledge, jokes and experiences.

Welcome to BBC Earth Science! Here we answer all your curious questions about science in the world around you. If there's a question we haven't answered yet, let us know in the comments on any of our videos and our Earth science experts can answer it.

Please take the opportunity to connect and share this video with your friends and family if you find it useful.