How did speech evolve?

How did speech evolve and do anti-ageing creams really work?
25 November 2016
Presented by Chris Smith

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Speech

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How did speech evolve, why do you need bacteria and fish food for aquaponic systems, do growth factors in anti-ageing creams really work, what treatments are there for allergies and how do UV lights vaporise fat in commercial kitchens? Plus, delving into the secrets of sleeping sickness.

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