The Life Scientific Folgen

Carlos Frenk, Ogden Professor of Computational Cosmology at the University of Durham, studies the universe, but not by spending nights looking out at the dark skies through telescopes. Rather he creates the cosmos on computers. He is also one of the Gang of Four of astrophysics who thirty years ago came up with one of the most important theories in their field. They worked out that the universe is full of cold dark matter. In 2011 Carlos Frenk and his colleagues were awarded the Gruber prize, one of the leading accolades in astronomy, for their theory.Carlos Frenk discusses this mysterious missing mass, which is still mysterious and missing, with Jim al-Khalili. They talk about modelling the universe inside computers, and how Carlos persuaded his university to hire the architect Daniel Liebskind to design a building for creative thinking about the cosmos.

Dorothy Bishop is a world-leading expert in childhood language disorders. Since the 1970s, she has been instrumental in bringing to light a little-known language disorder that may affect around two children per class starting primary school.'Specific Language Impairment', or SLI, was originally deemed to be the fault of lazy parents who didn't talk to their children. But through her pioneering studies on twins, Dorothy found a genetic link behind this disorder, helping to overturn these widespread misconceptions. Dorothy talks to Jim Al-Khalili about how families react when they discover there's a genetic basis to their problems, and why this language impairment isn't as well known as other conditions, like autism and dyslexia.A critic of pseudoscience and media misreporting, Dorothy discusses her experiences of speaking out against folk psychology and bad science journalism.Producer: Michelle Martin.

Neurosurgeon Henry Marsh talks to Jim Al-Khalili about slicing through thoughts, hopes and memories. Brain surgery, he says, is straightforward. It's deciding whether or not to operate that's hard.The stakes are high and it's never clear cut. He often dreads having to talk to patients and their families. Damage to healthy brain cells can result in a dramatic change to someone's quality of life; but if a bit of a tumour remains, it's likely to grow back. "How do you tell someone that the best option may be to go away and die?"Once, against his professional judgment, Henry went ahead with surgery because the patient wanted him to operate. The patient died and he blames himself for not being stronger. He talks openly about the cemetery that all doctors inevitably carry with them; and why he would rather be seen as a fallible human being, than either a superhero or villain. Perhaps it's inevitable that doctors are put on a pedestal but it can be unhelpful.Despite a chronic lack of science at school and university, Henry decided to become a neurosurgeon, having found general surgery rather disgusting. Soon after, his three month old son had surgery for a brain tumour: an experience which, he says, helped him to appreciate the fog of anxiety and concern that descends on the people he treats.Getting the balance right between compassion and detachment is a constant challenge. And Henry admits, he pioneered brain surgery under local anaesthetic, in part as a way of confronting head on the almost 'Jekyll and Hyde like split' between being a surgeon in the operating theatre and a friendly consultant who talks to and cares for his patients. Producer: Anna Buckley.