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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Newstalk’s studio is in Dublin city centre so if you head out on foot you could probably get to Croke Park in 30 minutes. In a car with no traffic you might get as far as Newgrange. In a jumbo jet you might even make it to Edinburgh. But… in this increasingly hypothetical situation, if you had an X3 you could, in theory, get to the moon. So what is an X3 and why don’t you already have one? Professor Alec Gallimore is Robert J. Vlasic Dean of Engineering at the University of Michigan.