The Life Scientific

As a scientist, John Krebs made his name discovering that the brains of birds that store seeds are different from those that don't. But he gave up his successful research career and job as Professor of Zoology at Oxford University to move into science policy and management. After five years as Chief Executive of the Natural Environment Research Council, John Krebs became the first Chairman of the Food Standards Agency, where he was embroiled in controversial questions such as is organic food better for us and how can the spread of foot and mouth disease be stopped. Lord Krebs is now Master of Jesus College, Oxford, but is still involved in issues where science meets public policy, in particular the debate over whether culling badgers will prevent cattle contracting TB. He talks to Jim al-Khalili about his life in science and in the public eye and about how he brings a scientific approach to every issue.

Geologist Sanjeev Gupta talks to Jim Al-Khalili about his love of exploring exotic terrains, from the foothills of the Himalaya to the red deserts of Mars. His research has taken him across the earth and now into space, working as a Long Term Planner on NASA's current Mars Curiosity Mission. But Sanjeev Gupta's big discovery lay at the bottom of the English Channel. Unearthing a 'wacky' theory from the 1980s, Sanjeev set out to prove that a series of megafloods caused Britain to separate from continental Europe and become an island. Producer: Michelle Martin.

Professor Dame Nancy Rothwell is not only one of the UK's leading brain scientists and physiologists; for the last three years Nancy Rothwell has also run the country's largest university - as President and Vice-Chancellor of the University of Manchester. When Nancy Rothwell is not making decisions about the university's �800 million annual budget and 50,000 students and staff, she oversees a laboratory of researchers developing and trialling an experimental treatment to prevent death and disability caused by stroke. Given that someone in the UK will have a stroke every five minutes, that adds up to a lot of people who might end up benefitting from Nancy Rothwell's life in science. Nancy did not start her career working on the brain. As a young scientist, in 1970s, she made her reputation with original and high profile research into the causes of obesity, and the role of a tissue type known as brown fat. But in the early 1990s, a shock finding from an experiment stopped her in her tracks. It revealed somet

Jim Al-Khalili talks to the former technical director of British Nuclear Fuels, Dame Sue Ion, about a lifetime of working in the nuclear industry. When Sue got her first job at a nuclear fuel fabrication plant in Preston, nuclear power was generally seen as force for good but, during the dark decades post Chernobyl, it was a hard sell. Still, Sue continued to push for investment and innovation in the industry and in 2006 persuaded Tony Blair to change his mind about nuclear power, insisting that if Britain is to have any chance at all of keeping the lights on and cutting its carbon emissions, we will need to invest heavily not only in renewables like offshore wind but also in a new generation of nuclear power stations.

Jim Al-Khalili talks to Professor Alan Watson from the University of Leeds who has spent 40 years trying to unravel a mystery at the frontier of physics. Where do cosmic rays, subatomic particles with the highest known energies in the entire Universe, come from? And which violent astronomical events are producing these hugely energetic jets of particles that travel for light years to reach us? As many as a million of them pass through us every night as we sleep, the equivalent of having 2 chest x rays every year. His quest to find the origins of cosmic rays has taken him from the North York Moors to the South Pole and the pampas grasslands of Argentina where he has been instrumental in creating the largest ever Cosmic ray detector, covering an area bigger than Luxembourg.

Jim Al-Khalili talks to breast cancer pioneer, Professor Valerie Beral director of the cancer epidemiology unit in Oxford about her Million Women study and why she thinks a so-called 'vaccine' should be developed to prevent breast cancer. Jim finds out why the brilliant mathematician who became female Australia junior chess champion as a teenager and who got a first class degree in medicine decided she was unhappy with the uncertainties of diagnosis as a doctor, and turned her back on clinical medicine in the quest for answers to the bigger questions about public health. She talks about pioneering research into the causes of cancer, effects of the contraceptive pill, radiation from Chernobyl and Hiroshima. Most recently as lead investigator on the million women study she has looked at the risks and health effects from taking HRT. She has said that it is a 'crime' that more research hasn't been done on what is known about women who don't get breast cancer to prevent breast cancer in other women.

Robots probably won't take over the world, but they probably will be given ever greater responsibility. Already, robots care for the elderly in Japan, and drones have dropped bombs on Afghanistan. Professor Noel Sharkey fell in love with artificial intelligence in the 1980s, celebrated when he programmed his first robot to move in a straight line down the corridor and , for many years, judged robot wars on TV. Now, he thinks AI is a dangerous dream. Jim al-Khalili hears how Noel left school at 15 to become an electrician's apprentice and amateur rock musician before graduating as a Doctor of Psychology and world authority on robots, studying both their strengths and their limitations.

Annette Karmiloff-Smith, from the Birkbeck Centre for Brain & Cognitive Development in London talks to Jim Al-Khalili about her Life Scientific. Starting out as a simultaneous interpreter for the United Nations she soon decided that not being allowed to express any thoughts of her own wasn't for her. After a chance encounter with Jean Piaget, one of the most renowned psychologists of all time, she decided to pursue psychology and over forty years later she is a world expert in brain development and how babies and children learn. Her research has been cited not just by fellow psychologists, but by philosophers, linguists, educationalists, geneticists and neuroscientists. Her controversial response to guidance issued by the American Academy of Paediatrics, that parents should discourage TV viewing in children under 2, is that if the subject matter is chosen well, and is scientifically based, a TV screen can be better for a baby than a book.

Jim Al-Khalili talks to Robert Mair, professor of Civil engineering at Cambridge University about his life as an engineer in academia and industry and his expertise on finding innovative solutions to the problems of building tunnels under already congested cities. He talks about his innovative technique of 'compensation grouting' which prevented Big Ben from tilting and even cracking and coming away from the Houses of Parliament during Jubilee line extension. Crossrail is one of the biggest engineering projects in Europe and involves constructing 26 miles of new tunnels underneath London's busy streets and under the existing tube network. Robert talks the latest tunnelling technology being used and the huge drilling machines with names like 'Ada' and Phyliss' which use high pressure to minimise ground movements as they drill and even have a kitchen and bathroom facilities on board. He also talks about his latest work on how smart sensors which can harvest their own energy. And when built into buildings, roa

Jim Al-Khalili talks to Amoret Whitaker, an entomologist at the Natural History Museum in London. Her intricate understanding of the life cycles of the flies, beetles and the other insects' which feed on decomposing bodies means she is regularly called by the Police to the scene of a crime or a murder investigation. There she collects and analyses any insect evidence to help them pin point the most likely time of death. In some instances, this can be accurate to within hours. She is just one of only a handful of forensic entomologists working in the UK. She talks to Jim about her life as a research scientist, breeding flies in the far flung towers of the Natural History Museum and her work as a forensic expert with police services across the country. Dropping her work at a moment's notice she can be called any time of day to anywhere in the country to attend a crime scene. She also talks about her regular trips to a research facility at the 'Body Farm' at the University of Tennesee in Knoxville in Ameria to

Sir John Gurdon talks to Jim al-Khalili about how coming bottom of the class in science was no barrier to winning this year's Nobel Prize for Physiology or Medicine. We're familiar with Dolly the Sheep but many people find the idea of cloning humans rather disturbing. It seems to cut to the core of who we are; but, scientifically speaking, we are getting closer to a time when cloning people might be possible. John Gurdon gives it fifty years. After a famously bad school report for science, he won the Nobel Prize for cloning a frog, decades before Dolly the Sheep. He talks to Jim al-Khalili about his pioneering work on cloning and where it all might lead.

Jim Al-Khalili talks to Jared Diamond about how his passion for the birds of Papua New Guinea overtook his medical interest in the gall bladder, and led him to undertake a scientific study of global history. Science polymath and celebrated author, Jared Diamond has tackled some of the big questions about humanity: what is it that makes us uniquely human not just a third species of chimpanzee; and why do some societies thrive and others struggle to survive, or collapse? Once a Professor of Physiology (specialising in the gall bladder), he became increasingly fascinated by the birds of Papua New Guinea and does an excellent imitation of the ptilinopus fruit dove, among others. Now Professor of Geography at University of California in LA, he stresses the vital importance of the environment in determining the success or otherwise of a society. He argues first that it was settled agriculture that enabled the white man to develop guns, germs and steel and later that abuse of the environment is often responsible fo

As the Curiosity rover ventures into previously unexplored territory on the surface of Mars and attempts to pick up and analyse rock samples for the first time, many hope that the NASA robot might find signs of life on the red planet. But, after so many false dawns and with such ambiguous evidence, how can we know for certain whether or not there was ever life on Mars? Jim al-Khalili and Monica Grady, Professor in Planetary Sciences at the Open University, discuss what life on Mars might look like; Monica's passion for meteorites and the asteroid named "monicagrady" in her honour.

Professor Hugh Montgomery is an intensive care physician and researcher at University College Hospital in London. His work has taken him to the Himalayas, where he and colleagues were studying the effect of oxygen uptake at high altitude. The findings were surprising and have implications for patients in intensive care. Jim al-Khalili talks to Hugh Montgomery about the gene for fitness and how mountaineers have influenced intensive care medicine.

Jim al-Khalili talks to the next chief scientific advisor to the government, Sir Mark Walport about how he thinks science can save the UK economy; how he plans to ensure that scientific evidence is taken seriously by an arts-dominated civil service and why he believes scientific research should be made available to everyone, free of charge. Sir Mark, who started his Life Scientific studying immune responses, has spent the last ten years in charge of one of the largest funders of medical research in the world, the Wellcome Trust. Many love his robust, straight-talking style: others find him uncompromising. He hopes to tackle environmental change and many of the problems associated with our ageing population, as well as changing Whitehall's attitude to science. It's hard to predict what other issues he may have to deal with, but even without an unexpected crisis, many anticipate that his forthcoming time in government will be nothing if not eventful.

Jim Al-Khalili meets Sunetra Gupta, a scientist and novelist. As a Professor of Theoretical Epidemiology she studies infectious diseases such as flu and malaria and explains how a mathematical equation can be as beautiful as a Keats poem.

Professor David Nutt was sacked in 2009 as the government's chief drugs adviser after criticising its decision to reclassify cannabis. He is a psychiatrist and one of the country's leading experts on the effects of drugs on the brain. His latest research is investigating how psilocybin, the active ingredient in magic mushrooms, could be used to treat depression. He talks to Jim about his passion for science and his disputes with government over drug policy.

Andrea Sella is a science showman, whose theatrical demonstrations of chemistry are filling theatres up and down the country. But as Professor of Materials and Inorganic Chemistry, Jim Al-Khalili asks him if he would rather be known for his research into rare metals than for his whizz bang displays.

Richard Dawkins' first book on evolutionary biology "The Selfish Gene" was published to much acclaim and some controversy in 1976. In this interview with Jim Al-Khalili, Professor Dawkins discusses his enthusiasm for the science that inspired the book and how he popularised the idea of the immortal gene. Using the source material from scientists such as Bill Hamilton, Robert Trivers and John Maynard Smith, he presented a gene's eye view of the world. He's written many other books on evolutionary biology, such as "The Extended Phenotype" "Unweaving the Rainbow" and "The Ancestors Tale". In 2006 he published a polemic which he describes as "a gentlemanly attack on religion", "The God Delusion". Jim asks what he hoped to achieve by writing the book and finds out why he would rather be known for his science than his atheism.

A world in which planes are silent may sound like a pipe dream; but University of Cambridge engineer, Dame Ann Dowling, and her team proved it is possible to build an aircraft that barely makes any noise. A brilliant mathematician and a keen pilot, Ann now heads of one of the largest engineering departments in Europe. Her design for a silent aircraft could improve the quality of life for millions of people living near airports worldwide: so does she mind that it never got off the ground? Jim talks to Ann Dowling about mathematics, engines and how she always wanted to do something useful. Producer: Anna Buckley.