1 in 4 people have some form of fatty liver disease. The condition can be deadly and there's a critical shortage of transplantable livers and fatty livers themselves cannot usually be used for transplant into others. Emma Keeling joins the Oxford-based start-up, Ochre Bio, who are using genomic medicines to switch off the fat-causing genes so the livers can be donated.

While many countries battle a difficult second wave of the Covid-19 pandemic, a light at the end of the tunnel has been offered by the rapid approval and roll-out of several new vaccines. Razor delves deeper into the four main vaccines currently being used in the battle against Sars-CoV-2.

And finally, Shini Somara reports on a collaboration between a mechanical engineer and Egyptologist at Swansea university has opened up a whole new window into the past. Professor Richard Johnston was having a coffee with his colleague Dr Carolyn Graves-Brown when he suggested using an X-ray scanner to reveal what's inside the ancient animal mummies held by the university. Professor Johnston and his team are now applying these techniques to the field of biomimicry, studying structures from nature that have evolved over millions of years, which can be mimicked in engineering.

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