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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When you walk out your door today, it may be sunny, it may be windy, the waves may be crashing against the shores with an awesome fierceness. Or, you know, none of those things might be happening. And therein lies one of the fundamental issues with renewable energy, its unpredictability. But one thing that won’t happen when you go out there this morning is that you won’t float off into the air. Gravity is reliably keeping your feet on the ground and it will continue to do so ad infinitum. So couldn’t we use this persistent force in some way to solve our energy woes? Jill MacPherson is Senior Test & Simulation Engineer with Gravitricity - she joins Jonathan to discuss.