In Our Time: Science

Latest Episodes:

Behavioural Ecology Dec 11, 2014

Show notes

Melvyn Bragg and guests discuss Behavioural Ecology, the scientific study of animal behaviour.

What factors influence where and what an animal chooses to eat? Why do some animals mate for life whilst others are promiscuous? Behavioural ecologists approach questions like these using Darwin's theory of natural selection, along with ideas drawn from game theory and the economics of consumer choice.

Scientists had always been interested in why animals behave as they do, but before behavioural ecology this area of zoology never got much beyond a collection of interesting anecdotes. Behavioural ecology gave researchers techniques for constructing rigorous mathematical models of how animals act under different circumstances, and for predicting how they will react if circumstances change. Behavioural ecology emerged as a branch of zoology in the second half of the 20th century and proponents say it revolutionized our understanding of animals in their environments.

GUESTS

Steve Jones, Emeritus Professor of Genetics at University College London

Rebecca Kilner, Professor of Evolutionary Biology at the University of Cambridge

John Krebs, Principal of Jesus College at the University of Oxford

Producer: Luke Mulhall.

Brunel Nov 13, 2014

Show notes

Melvyn Bragg and guests discuss Isambard Kingdom Brunel, the Victorian engineer responsible for bridges, tunnels and railways still in use today more than 150 years after they were built. Brunel represented the cutting edge of technological innovation in Victorian Britain, and his life gives us a window onto the social changes that accompanied the Industrial Revolution. Yet his work was not always successful, and his innovative approach to engineering projects was often greeted with suspicion from investors.

Guests:

Julia Elton, former President of the Newcomen Society for the History of Engineering and Technology

Ben Marsden, Senior Lecturer in the School of Divinity, History and Philosophy at the University of Aberdeen

Crosbie Smith, Professor of the History of Science at the University of Kent

Producer: Luke Mulhall.

Nuclear Fusion Oct 30, 2014

Show notes

Melvyn Bragg and his guests discuss nuclear fusion, the process that powers stars. In the 1920s physicists predicted that it might be possible to generate huge amounts of energy by fusing atomic nuclei together, a reaction requiring enormous temperatures and pressures. Today we know that this complex reaction is what keeps the Sun shining. Scientists have achieved fusion in the laboratory and in nuclear weapons; today it is seen as a likely future source of limitless and clean energy.

Guests:

Philippa Browning, Professor of Astrophysics at the University of Manchester

Steve Cowley, Chief Executive of the United Kingdom Atomic Energy Authority

Justin Wark, Professor of Physics and fellow of Trinity College at the University of Oxford

Producer: Thomas Morris.

e Sep 25, 2014

Show notes

Melvyn Bragg and his guests discuss Euler's number, also known as e. First discovered in the seventeenth century by the Swiss mathematician Jacob Bernoulli when he was studying compound interest, e is now recognised as one of the most important and interesting numbers in mathematics. Roughly equal to 2.718, e is useful in studying many everyday situations, from personal savings to epidemics. It also features in Euler's Identity, sometimes described as the most beautiful equation ever written.

With:

Colva Roney-Dougal Reader in Pure Mathematics at the University of St Andrews

June Barrow-Green Senior Lecturer in the History of Maths at the Open University

Vicky Neale Whitehead Lecturer at the Mathematical Institute and Balliol College at the University of Oxford

Producer: Thomas Morris.

The Sun Jul 10, 2014

Show notes

Melvyn Bragg and his guests discuss the Sun. The object that gives the Earth its light and heat is a massive ball of gas and plasma 93 million miles away. Thanks to the nuclear fusion reactions taking place at its core, the Sun has been shining for four and a half billion years. Its structure, and the processes that keep it burning, have fascinated astronomers for centuries. After the invention of the telescope it became apparent that the Sun is not a placid, steadily shining body but is subject to periodic changes in its appearance and eruptions of dramatic violence, some of which can affect us here on Earth. Recent space missions have revealed fascinating new insights into our nearest star.

With:

Carolin Crawford Gresham Professor of Astronomy and Fellow of Emmanuel College, Cambridge

Yvonne Elsworth Poynting Professor of Physics at the University of Birmingham

Louise Harra Professor of Solar Physics at UCL Mullard Space Science Laboratory

Producer: Thomas Morris.

Robert Boyle Jun 12, 2014

Show notes

Melvyn Bragg and his guests discuss the life and work of Robert Boyle, a pioneering scientist and a founder member of the Royal Society. Born in Ireland in 1627, Boyle was one of the first natural philosophers to conduct rigorous experiments, laid the foundations of modern chemistry and derived Boyle's Law, describing the physical properties of gases. In addition to his experimental work he left a substantial body of writings about philosophy and religion; his piety was one of the most important factors in his intellectual activities, prompting a celebrated dispute with his contemporary Thomas Hobbes.

With:

Simon Schaffer Professor of the History of Science at the University of Cambridge

Michael Hunter Emeritus Professor of History at Birkbeck College, University of London

Anna Marie Roos Senior Lecturer in the History of Science and Medicine at the University of Lincoln

Producer: Thomas Morris.

Photosynthesis May 15, 2014

Show notes

Melvyn Bragg and his guests discuss photosynthesis, the process by which green plants and many other organisms use sunlight to synthesise organic molecules. Photosynthesis arose very early in evolutionary history and has been a crucial driver of life on Earth. In addition to providing most of the food consumed by organisms on the planet, it is also responsible for maintaining atmospheric oxygen levels, and is thus almost certainly the most important chemical process ever discovered.

With:

Nick Lane Reader in Evolutionary Biochemistry at University College London

Sandra Knapp Botanist at the Natural History Museum

John Allen Professor of Biochemistry at Queen Mary, University of London.

Producer: Thomas Morris

States of Matter Apr 03, 2014

Show notes

Melvyn Bragg and his guests discuss the science of matter and the states in which it can exist. Most people are familiar with the idea that a substance like water can exist in solid, liquid and gaseous forms. But as much as 99% of the matter in the universe is now believed to exist in a fourth state, plasma. Today scientists recognise a number of other exotic states or phases, such as glasses, gels and liquid crystals - many of them with useful properties that can be exploited.

With:

Andrea Sella Professor of Chemistry at University College London

Athene Donald Professor of Experimental Physics at the University of Cambridge

Justin Wark Professor of Physics and Fellow of Trinity College at the University of Oxford

Producer: Thomas Morris.

The Eye Feb 27, 2014

Show notes

Melvyn Bragg and his guests discuss the eye. Humans have been attempting to understand the workings and significance of the organ for at least 2500 years. Some ancient philosophers believed that the eye enabled creatures to see by emitting its own light. The function and structures of the eye became an area of particular interest to doctors in the Islamic Golden Age. In Renaissance Europe the work of thinkers including Kepler and Descartes revolutionised thinking about how the organ worked, but it took several hundred years for the eye to be thoroughly understood. Eyes have long attracted more than purely scientific interest, known even today as the 'windows on the soul'.

With:

Patricia Fara Senior Tutor of Clare College, University of Cambridge

William Ayliffe Gresham Professor of Physic at Gresham College

Robert Iliffe Professor of Intellectual History and History of Science at the University of Sussex

Producer: Thomas Morris.

Social Darwinism Feb 20, 2014

Show notes

Melvyn Bragg and his guests discuss Social Darwinism. After the publication of Charles Darwin's masterpiece On the Origin of Species in 1859, some thinkers argued that Darwin's ideas about evolution could also be applied to human society. One thinker particularly associated with this movement was Darwin's near-contemporary Herbert Spencer, who coined the phrase 'survival of the fittest'. He argued that competition among humans was beneficial, because it ensured that only the healthiest and most intelligent individuals would succeed. Social Darwinism remained influential for several generations, although its association with eugenics and later adoption as an ideological position by Fascist regimes ensured its eventual downfall from intellectual respectability.

With:

Adam Kuper Centennial Professor of Anthropology at the LSE, University of London

Gregory Radick Professor of History and Philosophy of Science at the University of Leeds

Charlotte Sleigh Reader in the History of Science at the University of Kent.

Producer: Thomas Morris.

Our TOPPODCAST Picks

Follow Us

Stay Connected

Related Podcasts

Links

Stay Connected