Dr Chris Smith and the Naked Scientist team present the latest science news, analysis and breakthroughs. This week: Scientists uncover a way to help amputees to toughen up their skin in order to make prostheses more comfortable. COVID MRNA jab pharmaceutical company Moderna turn their attention to vaccines for Mpox. Plus the astronomer Royle Martin Rees on whether ET is really out there. And we're going underground to find out how disused mines are now being used to solve some of science's greatest mysteries, and to help keep the lights on by storing electricity as 'gravity batteries'. Get the podcast from the BBC Sounds app.