Covid, Nuclear Energy...and Lettuce!

Cases are at an all-time high, so is it time we started talking about Covid-19 again?Find out how lettuce is helping astronauts tackle bone density loss.As the energy crisis deepens, and inflation is predicted to be heading towards 10%, we look at how nuclear is going back up the energy agenda.Dr Chris Smith and the Naked Scientists with science news stories and analysis. Subscribe to the podcast, on BBC Sounds.