From Periodic Videos.

The Professor answers more viewer questions – with topics including elements (of course), dreaming, and hair shampoo. More links and info in full description ↓↓↓

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Some previous videos from this Q and A (more soon, especially on Patreon):

More chemistry at http://www.periodicvideos.com/
From the School of Chemistry at The University of Nottingham: http://bit.ly/NottChem

This episode was also generously supported by The Gatsby Charitable Foundation

Periodic Videos films are by video journalist Brady Haran: http://www.bradyharan.com/
Brady’s Blog: http://www.bradyharanblog.com