Why do we cry? What is it about humans that makes us shed tears due to sadness, laughter, anger or even onions? This week Luke explores the science of tears - an often under explored but fascinating corner of the biological world. Listen and subscribe to Show Me the Science on Apple Podcasts ,Google Podcasts and Spotify. Download, listen and subscribe on the Newstalk App. You can also listen to Newstalk live on newstalk.com or on Alexa, by adding the Newstalk skill and asking: 'Alexa, play Newstalk'.

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“What did the council decide on item 42?” — answered with the speaker and the moment.