The Life Scientific Folgen

John O'Keefe tells Jim Al-Khalili how winning the Nobel Prize was a bit of a double-edged sword, especially as he liked his life in the lab, before being made famous by the award. John won the prize for his once radical insight into how we know where we are. When he first described the idea of 'place cells' in the brain back in 1971, many scoffed. Today it's accepted scientific wisdom that our spatial ability depends on these highly specialized brain cells. A keen basketball player,John says, he has put this principle to the test by trying to shoot hoops with his eyes closed. But this belies the years of painstaking experiments on rats that John performed to prove that a rat's ability to know where it is depends not only on its sense of smell, but also on a cognitive map, or internal GPS, inside the rat's brain. He describes how he listened in on the unique firing patterns of individual rat brain cells using the tiniest electrodes: "You almost imagine they are singing to you", he says, as he imitates the different sounds made by individual neurons. And, he says, he misses them when they fall silent. It's important to John, and for his results, that his rats are happy and John welcomes the strong controls over animal experiments in the UK. Computer models are useful but, he says, they could never replace the need for experiments on animals, in the work that he does. And,while it need not necessarily have been the case, experiments on rats' brains have provided valuable insight into the workings of the human brain. John's research was entirely curiosity-driven but it could provide vital clues to understanding dementia and is already being used to develop a test for the earliest stages of Alzheimer's. Producer: Anna Buckley.

Professor Dave Goulson has been obsessed with animals since he was a child. He collected all kinds of creatures and went as far as doing home made taxidermy. He's now Professor of Biological Sciences at Sussex University where he specialises in bumblebees. Dave Goulson talks to Jim al-Khalili about how he took five years to work out how bees know which flowers to go to for the most nectar, and why he set up a charity to encourage the public and farmers to plant more flowers for bumblebees to feast upon.Recently Dave has found himself in a media storm as he's been studying the effects of pesticides called neo-nicotinoids on bumblebees. After he and others published research showing that the neo-nicotinoids have a detrimental effect on the foraging of bumblebees, the EU has brought in a temporary ban on some of them. But some farmers say that their harvests will be poor if they can't use these pesticides. Dave and Jim discuss the balance between conserving nature and feeding people.

Jim al-Khalili talks to Professor Dame Sally Davies about being a champion for patients and a champion for women.As Chief Medical Officer, the first woman to fill the post, she guides government decisions on pressing health issues such as antimicrobial resistance, mental health and, most recently, Ebola.Having spent many years working as a haematologist, focussing on sickle cell disease, Dame Sally now works tirelessly to put scientific evidence at the heart of Government decisions that affect out health. And it's this quest for evidence that has inspired much of her career.As Director General for Research and Development at the Department of Health, she saw the opportunity to overhaul health research in the National Health Service, focussing on the needs of patients. It was a hugely controversial idea which others had tried to implement, and failed. But she stuck to her guns and the National Institute for Health Research, which she created, is now the envy of the world.Named one of the most powerful women in the country, Dame Sally also has a powerful voice abroad. Through her work at the World Health Organisation, she's brought the world's attention to global threats like antimicrobial resistance.Producer: Beth Eastwood.