Could magma be key to limitless green energy? CNN 0 28 10.27 22:08 https://www.youtube.com/watch?v=jFGUqMTGC7g + 2 https://www.youtube.com/feeds/videos.xml?channel_id=UCupvZG-5ko_eiXAup… + 2 Could magma be key to limitless green energy?