This episode, Aidan interviews US Army Sergeant Emmet Long about Guns - breaking down how guns work, why they’ve changed over time, and how this has redefined the way wars are fought today.

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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