Jonathan responds to your texts and tweets, is joined in studio for all the latest science stories for Newsround and speaks to one of our two guests featured on the show. Listen and subscribe to Futureproof with Johnathan McCrea on Apple 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 and asking: 'Alexa, play Newstalk'
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The tongue is pretty important. Without it we would have a hard time speaking, eating, or even breathing. It's big too. It is constantly moving as it has to keep out of the way of your teeth and has thousands of touch and taste receptors. But, if it is so important to so many aspects of our lives then why do some of us habitually stick it out of our mouths? Dr Gillian Forrester, Director of Undergraduate Studies at the School of Science at Birckbeck University, London joins Jonathan to find out why.