The Life Scientific

Australian geneticist Jenny Graves discusses her life pursuing sex genes in her country's weird but wonderful fauna, the end of men and singing to her students in lectures.

Jim Al-Khalili talks to neuroscientist and occasional stand up comedian, Professor Sophie Scott about how she is using brain imaging techniques to reveal secrets of the complexity of brain activity when we speak and when we hear others speak. And Sophie Scott explains why laughter is such an important human social tool. But why is it that if we're laughing hard it can completely override our ability to speak? Also why it's not just humans who have a funny bone: even rats laugh.

Ian Stewart, Professor of Maths at Warwick University, has had a dual career as a research mathematician and as a populariser. He wrote his first book for a general audience - on chaos theory - over thirty years. He's also the author of short stories and novels of science fiction, and of the Science of Discworld series.Ian Stewart talks to Jim al-Khalili about his life, including his research into applying mathematics to problems of biology and how he communicates the ideas of number and maths to the general public.

Life on earth has gone through a series of mass extinctions. Mike Benton talks about his fascination with ancient life on the planet and his work on the Bristol Dinosaur Project.

Professor Mark Lythgoe created and runs the largest medical imaging research facility in Europe - the Centre for Advanced Biomedical Imaging at University College London. That is quite an achievement for someone who spectacularly failed his A levels because he was dancing on the podiums of Manchester clubs or tuning the engine of his motorbike. Now the Centre does everything from testing new treatments for cancer, stroke and heart disease to probing the homing sense of pigeons. Mark Lythgoe's team develops new techniques to image the living body and its biochemical activities in ever-minute detail, with radio, light and ultrasound waves.In The Life Scientific, Mark Lythgoe talks about the frontier research at his centre and the thrill he gets from it. As well as a scientist, he is also an intrepid mountain climber and believes there are parallels between the experiences of a mountaineer and those of an inventor of new views of the human brain and body. Professor Lythgoe talks candidly about his unconventional journey and struggle to make a successful career in science which took him through making plastic pipes in a factory, training Israeli attack dogs and working with Australian Aboriginal people. He describes the deep sense of failure which powered with his progress once he had a foot in the laboratory door. Mark also discusses his collaborations with artists on sci-art projects. He says one film project about a young girl with a severe brain condition helped to make him the scientist he is today.

Joanna Haigh, Professor of Atmospheric Physics at Imperial College, London, studies the influence of the sun on the earth's climate using data collected by satellites. She talks to Jim al-Khalili about how she got started on her career in climate physics: she can trace her interest in it back to her childhood when she built herself a home weather station.Jo Haigh explains why we need to know how the sun affects the climate: it's so scientists can work out what contribution to warming is the result of greenhouse gases that humans produce, and what is down to changes in the energy coming from the sun.She has sat on the Intergovernmental Panel on Climate Change and discusses with Jim how it delivers its reports. And as a prominent scientist who speaks out about the dangers of increasing man made greenhouse gases in the atmosphere, she explains how she responds to climate change deniers.

Russell Foster, Professor of Circadian Neuroscience at Oxford University, is obsessed with biological clocks. He talks to Jim al-Khalili about how light controls our wellbeing from jet lag to serious mental health problems. Professor Foster explains how moved from being a poor student at school to the scientist who discovered a new way in which animals detect light.

Jim Al-Khalili talks to the social psychologist Liz Stokoe about her research as a conversation analyst. Her interest is in the nuances of everyday chit chat but also people going on first dates, the verbal abuse between neighbours at war as well as interviews by the Police with suspected criminals.Liz is professor of social interaction at the University of Loughborough and her unusual approach involves collecting and analysing the fine details of hundreds of real, spontaneous conversations as a source of raw data. This is in contrast to more traditional means, used by other psychologists of finding out what people think by asking them directly using surveys and questionnaires.Her most recent research has overturned ideas about the best ways to teach people how to communicate, negotiate or deal with confrontation. Role play using actors to stage a scenario, has been seen by many as a gold standard training device. But, Liz says there's no evidence to show that it works. Her alternative technique is based on her own scientific research and is already being widely used by different organisations from the Police to Mediation services and even hospitals, to help with doctor patient relationships.

Is it more reckless to eat a bacon sandwich everyday or to go skydiving? What's the chance that all children in the same family have exactly the same birthday? Jim Al-Khalili talks to Professor David Spiegelhalter about risk, uncertainty and the real odds behind everyday life. As one of the world's leading statisticians, he is regularly called upon to help answer questions in high profile inquiries - like the one into the Harold Shipman murders, infant heart surgery at Bristol Royal Infirmary and the PiP breast implant scandal.Jim finds out more about the Life Scientific of the man who despite winning many awards and his research papers being some of the most cited in his field David Spiegelhalter says he isn't really that good at maths.

Ewan Birney talks to Jim Al-Khalili about his work on deciphering the human genome and the race to come up with the right number of genes that make us human. Ewan explains why he started a sweepstake to get fellow scientists to estimate the final number and why numbers were wildly wrong. He explains his role in the recent controversy over claims about the demise of 'Junk' DNA. He also talks about artificial DNA and whether it could be the future for information storage? With a colleague, he has already used a small speck of artificial DNA to store Shakespeare's sonnets. In theory, all of the world's information could be held on DNA in a space the size of a small room. If kept cold, dry and dark, DNA lasts for thousands of years so could it be the archive medium of the future?