We look at a gene editing breakthrough, a new technique to correct genetic errors in sick patients. Roland speaks to Professor David Liu to learn about the base editing technology. Also, we look into the complex causes of last year's post-pandemic spike in child hepatitis. Professor Judy Breuer and her colleagues may have found an explanation behind the unexpected outbreak. And the James Webb Space Telescope continues to seek out the secrets of our universe. Professor Beth Biller and Dr Elsa Ducrot have the details on the atmospheres of two very distant, and very different, exoplanets. Plus, how to get sober – for mice. Professor Steven Kliewer explains how certain mammals have evolved to deal with the intoxicating effects of ethanol. Producer: Roland Pease Assistant Producer: Sophie Ormiston (Image: Genetic engineering 3D rendered conceptual image. Credit: Getty Images)