For the second half of this two-part topic, Andrew and Aidan chat about the history of addictive disorders in humans, and how these issues have flowed well into the modern age.

This season is supported by FameLab Ireland. FameLab is the world's leading science communication competition, designed to inspire, motivate and develop scientists and engineers to actively engage with the public. Created by the Cheltenham Science Festival in the UK, in Ireland the competition is funded by Science Foundation Ireland and managed by the British Council in partnership with universities and science research centres across the country. For more information please visit www.britishcouncil.ie/famelab

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