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In Our Time: Science

BBC Radio 4

Scientific principles, theory, and the role of key figures in the advancement of science.

history

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28:12

The Earth's Origins

In Our Time: Science ·

2001/07/05

Melvyn Bragg discusses the origin of the Earth. Ideas used to be very clear about its origins. Bishop Ussher, in 1654 arrived at an exact figure and specified it in his work Annalis Veteris et Novi Testamenti: He deduced that work on Planet Earth began at exactly 9am, on Monday 23rd October 4004 BC. The date was then printed in the margin of The Bible and preached from the pulpit, and right up to the nineteenth century to the left of ‘In The Beginning…’ was specified ‘Before Christ 4004’.Christian

28:11

Black Holes

In Our Time: Science ·

2001/04/12

Melvyn Bragg and guests discuss Black Holes. They are the dead collapsed ghosts of massive stars and they have an irresistible pull: their dark swirling, whirling, ever-hungry mass has fascinated thinkers as diverse as Edgar Allen Poe, Stephen Hawking and countless science fiction writers. When their ominous existence was first predicted by the Reverend John Mitchell in a paper to the Royal Society in 1783, nobody really knew what to make of the idea - they couldn’t be seen by any telescope

42:17

Fossils

In Our Time: Science ·

2001/03/22

Melvyn Bragg and guests discuss the significance of fossils. In the middle of the nineteenth century the discoveries of the fossil hunters used to worry poor Ruskin to death, he wrote in a letter in 1851, “my faith, which was never strong, is being beaten to gold leaf…If only those Geologists would let me alone I could do very well, but those dreadful Hammers! I hear the clink of them at the end of every cadence of the Bible verses.”The testimony of fossils over the ages has been remarkably eloquent

28:19

Quantum Gravity

In Our Time: Science ·

2001/02/22

Melvyn Bragg examines Quantum Gravity. Early in the 20th century physicists were startled by the realisation that the smallest things in the universe do not obey Newton’s laws of gravity. Ripe apples fall from trees, billiard balls roll mostly on the table and the moon orbits the Earth in thrall to its gravitational pull, but there is no such force of gravity at work in the world of very small things. It seems there is one set of rules for the realm of every day objects, and a very different set of

28:21

Imperial Science

In Our Time: Science ·

2001/02/01

Melvyn Bragg and guests discuss what drove the British Empire, especially in Victoria’s century. Was it science, more specifically, the science of plants, of agriculture, a scientific notion of nature and the improvement of nature? Was this seemingly rather adjacent notion - that the source of Empire can be found in Kew Gardens, Royal, Botanical, rather than in the muzzle of a gun or in the purse of a plunderer or in the consciousness of a conqueror - was science “the force that was with us?”

28:20

Mathematics and Platonism

In Our Time: Science ·

2001/01/11

Melvyn Bragg looks at the deep claims made for mathematics, the discipline some believe to be the soul and true key to the understanding of all life, from the petals on the sunflower to the pulse in our wrists. The notion that mathematics is akin to theology might take some taking in at first. But from the first, in the West, they were. To Pythagoras, numbers were mystical and “prove” God. To Plato, who, it is claimed, has driven mathematics for over two thousand years, the ideals beyond the

42:08

Psychoanalysis and Literature

In Our Time: Science ·

2000/11/09

Melvyn Bragg and guests discuss role of Freudian analysis in understanding the great works of literature. Freud said, “The poets and philosophers before me discovered the unconscious. What I discovered was the scientific method by which the unconscious can be studied”. Psychoanalysis has always been more than a ‘talking cure’ and it has strong ties to literature, but one hundred years after the publication of the first great work of psychoanalysis, The Interpretation of Dreams, critics are putting

28:18

Evolutionary Psychology

In Our Time: Science ·

2000/11/02

Melvyn Bragg and guests discuss Evolutionary Psychology. Richard Dawkins redefined human nature in 1976, when he wrote in The Selfish Gene: “They swarm in huge colonies, safe inside giant lumbering robots, sealed off from the outside world, communicating with it by tortuous indirect routes, manipulating it by remote control. They are in you and me; they created us body and mind; and their preservation is the ultimate rational of our existence…they go by the name of genes and we are their survival

28:05

Laws of Nature

In Our Time: Science ·

2000/10/19

Melvyn Bragg and guests discuss the Laws of Nature. Since ancient times philosophers and physicists have tried to discover simple underlying principles that control the Universe: In the 6th Century BC Thales declared “Everything is water”, centuries later Aristotle claimed that all of creation was forged from four elements, Newton more successfully laid down the Law of Universal Gravitation and as we speak, contemporary scientists are struggling to complete the task of ‘String Theory’ - the quest

42:33

Imagination and Consciousness

In Our Time: Science ·

2000/06/29

Melvyn Bragg and guests discuss the question of consciousness, our sense of self, and how we are able to imagine things when they are not there, which are problems that have troubled the great minds of philosophy for thousands of years. Consciousness has been linked to language, has been married to the mind and divorced from the body; it has been denied to animals, opposed to the subconscious and declared irreducible, but still it defies definition, and the debate rages on as to why we evolved it at

28:01

Chemical Elements

In Our Time: Science ·

2000/05/25

Melvyn Bragg and guests discuss the chemical elements. The aim and challenge in chemistry, according to the Encyclopaedia Britannica, is the understanding of the complex materials which constitute everything in existence since the Big Bang, when the whole universe emerged out of the two elements of hydrogen and helium. For Aristotle there were four elements: Earth, Air, Fire and Water. Now there are one hundred and eight, sixteen of which are produced artificially, and none of which figure in

28:06

Human Origins

In Our Time: Science ·

2000/04/27

Melvyn Bragg and guests discuss the evolution of the human species. Where did we come from - we being Homo Sapiens? Let’s not go back to the Big Bang or in search of Genesis, but sift through the evidence from biology, palaeontology, climatology and anthropology.The story of human evolution is one that stretches back over five million years, and during that time there are reckoned to have been between fifteen and twenty species of hominid to have walked this planet. From the earliest (Genus)

28:24

The Natural Order

In Our Time: Science ·

2000/04/06

Melvyn Bragg examines the science of taxonomy. The Argentinean author Jose Luis Borges illustrated the problematic nature of scientific classification when he quoted from an ancient Chinese Encyclopaedia, the Celestial Emporium of Benevolent Knowledge. On these remote pages, in a complete absence of Phylum, Genus and Species, animals are divided into: (a) those that belong to the Emperor, (b) embalmed ones, (c) those that are trained, (d) suckling pigs and those that tremble as if they were mad

28:13

Grand Unified Theory

In Our Time: Science ·

2000/02/24

Melvyn Bragg examines 20th century physics’ quest for the ultimate theory of everything. Einstein left us with his theory of General Relativity, which explained how gravity works on the scale of stars, galaxies, and the universe itself and Schroedinger left us with the equation that explained the mechanics of the tiny quantum realm. Both theories work to wonderful effect in their own worlds, but (and this is the sticking point) gravity is strangely absent from the quantum realm and planets behave

28:03

Goethe and the Science of the Enlightenment

In Our Time: Science ·

2000/02/10

Melvyn Bragg and guests discuss Johann Wolfgang von Goethe, the great poet and dramatist, famous for Faust, for The Sorrows of Young Werther, for Storm und Drang and for being a colossus in German literature. Born in the middle of the eighteenth century he lived through the first third of the nineteenth. He wrote lyric and epic verse, literary criticism, prose fiction, translations from 28 languages, he was a politician as well and was hailed by Napoleon as the boundless measure of man; but for much

27:42

Information Technology

In Our Time: Science ·

2000/01/13

Melvyn Bragg discusses the social and economic consequences of the information revolution. There are now more than 200 million people connected to the internet world-wide. The world’s biggest ever merger has just seen Time Warner united with the internet service provider America Online, and in the United States alone it is predicted that transactions conducted in cyberspace will account for 327 billion dollars worth of business by 2002. Should we be pleased? Is it the ‘third wave’ as Dr Toffler

27:30

Climate Change

In Our Time: Science ·

2000/01/06

Melvyn Bragg discusses climate change. In 1999 the weather gave the planets occupants a terrible beating: 16,000 people lost their lives as a result of storms. Some 15 million people were left homeless and 10,000 died when the worlds worst cyclone swept across eastern India. Hurricane Floyd wreaked 4.3 billion pounds worth of damage in the United States, Typhoon Bart hit Japan and Typhoon York hit Hong Kong and Macau. Western Europe is unused to hurricane force winds, but since Christmas 80

28:16

Time

In Our Time: Science ·

1999/12/30

Melvyn Bragg and guests discuss the history of mankind’s attempt to understand the nature of time. At the end of the 19th century, H.G.Wells imagined travelling through time in The Time Machine; “The palpitation of night and day merged into one continuous greyness; the sky took on a wonderful deepness of blue, a splendid luminous colour like that of early twilight; the jerking sun became a streak of fire, a brilliant arch in space”. When he was writing we thought time was unbending and universal

27:41

Medical Ethics

In Our Time: Science ·

1999/12/16

Melvyn Bragg examines the technological advances and ethics of modern medicine. On an average working day about three quarters of a million of us go to the doctors. About a hundred thousand are visited by nurses and other health professionals. Then there are the three hundred thousand that go to the dentist. Health is a central preoccupation. It is also big business, saving life, lengthening life and even promising a stab at eternal life. Yet while some technology is Space Age, the morality is

27:58

Consciousness

In Our Time: Science ·

1999/11/25

Melvyn Bragg and guests discuss the problems of consciousness, one of the greatest mysteries facing science and philosophy today. The frustrations, the stubborn facts and the curiosities of today’s thinkers, philosophers, physicists and psychologists, demonstrate the elusiveness, and the utter impenetrability of consciousness. Can we explain our perception of colour, smell or what it is like to be in love in purely physical terms? Can memory, conviction and reason be explained primarily in terms of

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