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Discovery

BBC World Service

Explorations in the world of science.

science

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26:56

Bringing Schrodinger's Cat to Life

Discovery ·

2018/04/16

Schrodinger's cat is the one that's famously alive and dead. At the same time. Impossible! Roland Pease meets the quantum scientists hoping to bring one to life in the laboratory. Not a real cat, to be fair. But large biomolecules, viruses, even bacteria, that can exhibit the quantum duality parodied in the paradox first described by one of the fathers of quantum physics. Because if they succeed, they may learn something about the interface between the quantum world, and the human world we live

26:52

Barbara McLintock

Discovery ·

2018/04/09

Barbara McClintock’s work on the genetics of corn won her a Nobel prize in 1983. Her research on jumping genes challenged the over-simplified picture of chromosomes and DNA that Watson and Crick’s discovery has all too often been used to support. During the half century that she worked at the Cold Spring Harbor Laboratory she became something of a living legend, a pioneer in a time when women weren’t expected to take much interest in science. In that story, she made a profound discovery that her

26:53

D'Arcy Thompson

Discovery ·

2018/04/02

One hundred years ago D'Arcy Wentworth Thompson published On Growth and Form, a book with a mission to put maths into biology. He showed how the shapes, forms and growth processes we see in the living world aren’t some arbitrary result of evolution’s blind searching, but are dictated by mathematical rules. A flower, a honeycomb, a dragonfly’s wing: it’s not sheer chance that these look the way they do. But can these processes be explained by physics? D'Arcy Thompson loved nature’s shapes and

26:53

The Far Future

Discovery ·

2018/03/26

How do we prepare for the distant future? Helen Keen meets the people who try to.If our tech society continues then we can leave data for future generations in huge, mundane quantities, detailing our every tweet and Facebook 'like'. But how long could this information be stored? And if society as we know it ends, will our achievements vanish with it? How do we plan for and protect those who will be our distant descendants and yet may have hopes, fears, languages, beliefs, even religions that we

26:28

Why We Cut Men

Discovery ·

2018/03/19

Male circumcision is one of the oldest and most common surgical procedures in human history. Around the world, 1 in 3 men are cut. It’s performed as a religious rite in Islam and Judaism; in other cultures it’s part of initiation, a social norm or marker of identity. Some individuals think it’s cleaner, sexier or safer. In this documentary, anthropologist Mary-Ann Ochota explores the reasons we cut men. She meets people who passionately promote the practice – and others who protest against it.Across

26:33

Iodine

Discovery ·

2018/03/12

The phrase 'essential 'element' is often incorrectly used to describe the nutrients we need, but can aptly be applied to iodine - without it we would suffer severe developmental problems. Iodine is a key component of thyroid hormones, responsible for the regulation of our metabolism. And yet most of us have no idea how much we need, nor where it comes from. In her research, Margaret Rayman, Professor of Nutritional Medicine at Surrey University, has found pregnant women in particular are at risk of

26:31

Phosphorus

Discovery ·

2018/03/05

What links trade unions with urine, Syria with semiconductors, and bones and bombs? The answer is phosphorus, UCL Inorganic Chemistry Professor Andrea Sella, who is himself engaged in researching new phosphorus based materials, looks at this often rather frightening element. We hear how the health impact of phosphorus on a group of Irish girls changed politics, how the element has been used as a weapon of war and we peer into the future, as chemists break new ground on what might be possible with

27:12

Lead

Discovery ·

2018/02/26

From the plumbing of ancient Rome, to lead acid batteries, paint, petrol and a dangerous legacy, the metal lead has seen a myriad of uses and abuses over thousands of years. In bullets, and poisons it has killed us both quickly and slowly, and yet its malleability, low melting point and resistance to corrosion make it a fantastic material for all kinds of containers and water proofing. And it is key to one of the most commonly used, and ignored, devices on the planet, the car battery.However it's

26:28

The Power of Sloth

Discovery ·

2018/02/19

Zoologist and founder of the Sloth Appreciation Society, Lucy Cooke, unleashes her inner sloth to discover why being lazy could actually be the ultimate evolutionary strategy.The explorers of the New World described sloths as ‘the lowest form of existence’, but sloths are actually some of the most enduring of all tropical mammals. They make up one third of the mammalian biomass in rainforests and have survived some 64 million years - outliving far flashier animals like sabre tooth tigers. The secret

26:48

Pain of Torture

Discovery ·

2018/02/12

Does knowing that someone is inflicting pain on you deliberately make the pain worse? Professor Irene Tracey meets survivors of torture and examines the dark side of pain.Producer: Geraldine Fitzgerald(Photo: A woman mourns during the funeral procession of Abdulrassul Hujairi. Credit: Joseph Eid/AFP)

26:47

Controlling Pain

Discovery ·

2018/02/05

What if your brain could naturally control pain? Professor Irene Tracey and her colleagues are trying to unlock the natural mechanisms in the brain that limit the amount of pain we feel.We hear about how children learning judo are taught special techniques and from ex-marine Chris Shirley who ran a marathon carrying a 45kg rucksack and could ignore the pain of the blisters and torn shoulder muscles. One study found that religious people feel less pain than agnostics by looking at a picture of

26:50

Knowing Pain

Discovery ·

2018/01/29

Scientists reveal why we feel pain and the consequences of life without pain. One way to understand the experience of pain is to look at unusual situations which give clues to our everyday agony.Phantom limb pain was described in ancient times but only after WWI did it gain acceptance in modern medicine. For those living with it, it can be a painful reminder of a lost limb. New studies are now unravelling why the brain generates this often unpleasant experience and how the messages can be used

26:49

Seeing Pain

Discovery ·

2018/01/22

Mystery still surrounds the experience of pain. It is highly subjective but why do some people feel more pain than others and why does the brain appear to switch off under anaesthesia so we are unaware of the surgeon’s scalpel? Professor Irene Tracey uses brain scanners to ask if we can actually see pain in the brain. On air we hear for the first time the results of the latest research into diabetes and nerve pain. Promising new techniques means scientists are able to see regions in the brain which

26:32

Humphry Davy

Discovery ·

2018/01/15

In Bristol in 1799, a young man started to experiment with newly discovered gases, looking for a cure for tuberculosis. Humphry Davy, aged 20, nearly killed himself inhaling carbon monoxide. Nitrous oxide was next. It was highly pleasurable, ‘particularly in the chest and extremities’ and he began to dance around his laboratory ‘like a madman’, before passing out. By day, he gave the gas to patients, carefully noting their reactions. In the evenings, he invited his friends over to have a laugh (with

26:32

Lise Meitner

Discovery ·

2018/01/09

Philip Ball reveals the dramatic tale of Lise Meitner, the humanitarian physicist of Jewish descent, who unlocked the science of the atom bomb after a terrifying escape from Hitler's Germany. One of the most brilliant nuclear scientists working in Germany her flight from terror cost Hitler’s regime dearly.In the early 20th Century it was barely possible for women to work in science at all and yet Einstein once called Meitner Germany’s own Marie Curie. It was Meitner’s insight that began the nuclear

26:33

The Day the Earth Moved

Discovery ·

2018/01/01

Roland Pease tells the story of how fifty years ago geologists finally became convinced that the earth’s crust is made up of shifting plates. The idea of mobile continents, continental drift, had been talked about, for example because it looked like Africa and South America had once been joined, and were now separated by the Atlantic. But given the solidity of rocks and the vastness of continents, that idea made no sense. Until plate tectonics, as it became known, gave it a scientific basis and

26:28

Maria Merian

Discovery ·

2017/12/25

Maria Merian was born in 1647. At the time of her birth, Shakespeare had been dead for 30 years; Galileo had only just stood trial for arguing that the Earth moved around the Sun. And yet, here in Germany, was a child who would become an important but oft-forgotten figure of science.Aged 13, she mapped out metamorphosis, catching caterpillars from her garden and painting them in exquisite detail. At that point, most believed that caterpillars spontaneously generated from cabbages and maggots

26:28

Alcuin of York

Discovery ·

2017/12/18

The Dark Ages are often painted as an era of scholarly decline. The Western Roman Empire was on its way out, books were few and far between, and, if you believe the stereotype, mud-splattered peasants ran around in rags.However, it was far more intellectually vibrant than you might imagine. Out of this era emerged a set of ‘problems to sharpen the young,’ including the famous river crossing puzzle that’s still taught in maths today. The presumed author of these riddles is Alcuin of York – ‘the most

26:28

Cheating the Atmosphere

Discovery ·

2017/12/11

All countries are supposed to measure and report their greenhouse gas emissions but BBC environment correspondent, Matt McGrath, reveals there are gaping holes in national inventories. He uncovers serious failings in countries’ accounts of warming gases with many not reporting at all. There are disturbing signs that some banned warming chemicals, which are supposed to have been phased out completely, are once again on the rise. And evidence that worthless carbon credits are still being traded

27:33

Better Brains

Discovery ·

2017/12/04

Every three seconds someone is diagnosed with dementia, and two thirds of the cases are Alzheimer’s Disease. As the global population ages, this is becoming an epidemic, and with no cures currently available for the collection of neurodegenerative conditions that include Alzheimer’s, Parkinson’s and Motor Neurone Disease the public and personal cost is escalating. Sue Broom reports on new efforts to find ways to stop the progress of these diseases for the first time, and to bring treatment for

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