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"Melvyn Bragg and guests David Jackson, Dorothy Rowe and Alastair Wright discuss the work of the Norwegian artist Edvard Munch, focusing on his most famous painting, The Scream. First exhibited in 1893 in Berlin, The Scream was the culmination of Munch's magnum opus, a series of paintings called The Frieze of Life. This depicted the course of human existence through burgeoning love and sexual passion to suffering, despair and death, in Munch's highly original, proto-expressionist style. His titles, from Death in the Sickroom, through Madonna to The Vampire, suggest just how directly and unironically he sought to depict the anxieties of late-19th century Europe. But against all Munch's images, it is The Scream which stands out as the work which has seared itself into the Western imagination. It remains widely celebrated for capturing the torment of existence in what appeared to many in Munch's time to be a frightening, godless world. Munch himself endured a childhood beset by illness, madness and bereavement. At 13, he was told by his father that his tuberculosis was fatal. But he survived and went on to become a major figure first in the Norwegian, then the European, avant-garde. He became involved with two of the great playwrights of the period. He collaborated with his fellow countryman Henrik Ibsen and became a close friend of the tempestuous Swede August Strindberg. He admired the work of Post-Impressionist painters such as Paul Gauguin and Vincent van Gogh and the philosophy of Friedrich Nietzsche, all of whom influenced his art. Munch's own influence resonated through the 20th century, from German Expressionism to Andy Warhol and beyond. His work, particularly The Scream, remains powerful today."

"Melvyn Bragg and guests discuss the role of animals in humankind's search for knowledge. Since the Greek physician Galen used pigs for anatomical studies in the 2nd century, animals have been used by scientists to further human knowledge. Yet few, if any subjects in this country, raise such violent feelings and passions as animals and their place in our society. With the growing politicisation of animal rights, it is a subject which is increasing in intensity. Do animals have rights and do our needs permit us to use them still to enhance our own lives in the twentieth century? Is it still necessary to experiment on animals for the good of humankind? Or is that morally unacceptable and barbaric - particularly in the light of new research into animal consciousness? With Colin Blakemore, Professor of Physiology, Oxford University, President of the British Association for the Advancement of Science, Fellow of the Royal Society and targeted in the 1980s by animal welfare activists protesting at his research methods; Dr Lynda Birke, biologist, teacher at Lancaster and Warwick Universities, and previously worked for 7 years in animal behaviour at the Open University."

"A Santa Barbara, Calif., startup called Social Intelligence data-mines the social networks to help companies decide if they really want to hire you. While background checks, which mainly look for a criminal record, and even credit checks have become more common, Social Intelligence is the first company that I'm aware of that systematically trolls social networks for evidence of bad character. Using automation software that slogs through Facebook, Twitter, Flickr, YouTube, LinkedIn, blogs, and "thousands of other sources," the company develops a report on the "real you" -- not the carefully crafted you in your resume. The service is called Social Intelligence Hiring. The company promises a 48-hour turn-around. Because it's illegal to consider race, religion, age, sexual orientation and other factors, the company doesn't include that information in its reports. Humans review the reports to eliminate false positives. And the company uses only publically shared data -- it doesn't "friend" targets to get private posts, for example. The reports feature a visual snapshot of what kind of person you are, evaluating you in categories like "Poor Judgment," "Gangs," "Drugs and Drug Lingo" and "Demonstrating Potentially Violent Behavior." The company mines for rich nuggets of raw sewage in the form of racy photos, unguarded commentary about drugs and alcohol and much more. "

"You probably think of Marcel Proust as the author of the massive seven-part autobiographical novel, "In Search of Lost Time." But did you know that Proust can also be considered a scientist? That's the argument that Jonah Lehrer makes in his book, "Proust Was A Neuroscientist." Next time on To the Best of Our Knowledge, Lehrer explains how Proust made discoveries about the human brain long before science did, as we explore the cultures of arts and science. Also... Richard Holmes on the discovery of the beauty and terror of science during the Romantic era."

"Sixty years ago, Allied forces brought an end to Adolf Hitler's dream that Germany would rule Europe and dominate the world. The death of Nazi Germany gave birth to a charge that still haunts the scientific community--what might be called "the Nazi analogy." In ethical or policy disputes about science and medicine, no argument can bring debate to a more screeching halt then the invocation of the Nazi comparison. Whether the subject is stem cell research, end-of-life care, the conduct of clinical trials in poor nations, abortion, embryo research, animal experimentation, genetic testing, or human experimentation involving vulnerable populations, references to Nazi policies or practices tumble forth from critics. "If X is done, then we are on the road to Nazi Germany" has become a commonplace claim in contemporary bioethical debates. Sadly, too often those who draw an analogy between current behavior and what the Nazis did do not know what they are talking about. The Nazi analogy is equivalent to dropping a nuclear bomb in ethical battles about science and medicine. Because its misuse diminishes the horror done by Nazi scientists and doctors to their victims, it is ethically incumbent upon those who invoke the Nazi analogy to understand what they are claiming."

"Yet for all these apparent flaws, the basic building blocks of human eyesight turn out to be practically perfect. Scientists have learned that the fundamental units of vision, the photoreceptor cells that carpet the retinal tissue of the eye and respond to light, are not just good or great or phabulous at their job. They are not merely exceptionally impressive by the standards of biology, with whatever slop and wiggle room the animate category implies. Photoreceptors operate at the outermost boundary allowed by the laws of physics, which means they are as good as they can be, period. Each one is designed to detect and respond to single photons of light - the smallest possible packages in which light comes wrapped. "

"Incensed by what it sees as a virtual pandemic of verbal vulgarity issuing from the diverse likes of Howard Stern, Bono of U2 and Robert Novak, the United States Senate is poised to consider a bill that would sharply increase the penalty for obscenity on the air. By raising the fines that would be levied against offending broadcasters some fifteenfold, to a fee of about $500,000 per crudity broadcast, and by threatening to revoke the licenses of repeat polluters, the Senate seeks to return to the public square the gentler tenor of yesteryear, when seldom were heard any scurrilous words, and famous guys were not foul mouthed all day. Yet researchers who study the evolution of language and the psychology of swearing say that they have no idea what mystic model of linguistic gentility the critics might have in mind. Cursing, they say, is a human universal. Every language, dialect or patois ever studied, living or dead, spoken by millions or by a small tribe, turns out to have its share of forbidden speech, some variant on comedian George Carlin's famous list of the seven dirty words that are not supposed to be uttered on radio or television. "

"Why do people see faces in nature, interpret window stains as human figures, hear voices in random sounds generated by electronic devices or find conspiracies in the daily news? A proximate cause is the priming effect, in which our brain and senses are prepared to interpret stimuli according to an expected model. UFOlogists see a face on Mars. Religionists see the Virgin Mary on the side of a building. Paranormalists hear dead people speaking to them through a radio receiver.\n1\nConspiracy theorists think 9/11 was an inside job by the Bush administration. Is there a deeper ultimate cause for why people believe such weird things? There is. I call it "patternicity," or the tendency to find meaningful patterns in meaningless noise."

"Grisha Perelman, where are you? Three years ago, a Russian mathematician by the name of Grigory Perelman, a k a Grisha, in St. Petersburg, announced that he had solved a famous and intractable mathematical problem, known as the Poincaré conjecture, about the nature of space. After posting a few short papers on the Internet and making a whirlwind lecture tour of the United States, Dr. Perelman disappeared back into the Russian woods in the spring of 2003, leaving the world's mathematicians to pick up the pieces and decide if he was right. Now they say they have finished his work, and the evidence is circulating among scholars in the form of three book-length papers with about 1,000 pages of dense mathematics and prose between them. As a result there is a growing feeling, a cautious optimism that they have finally achieved a landmark not just of mathematics, but of human thought."

"WHEN colleges and universities finally decide to make full use of the Internet, most professors will lose their jobs. Enlarge This Image Many leading universities have put free videos online featuring their best lecturers. One aggregator site, Academic Earth, offers 150 courses. That includes me. I'm not worried, though, at least for the moment. Amid acute budget crises, state universities like mine can't afford to take that very big step - adopting the technology that renders human instructors obsolete. "

"For many years, scientists have thought that the first Americans came here from Asia 13,000 years ago, during the last ice age, probably by way of the Bering Strait. They were known as the Clovis people, after the town in New Mexico where their finely wrought spear points were first discovered in 1929. But in more recent years, archaeologists have found more and more traces of even earlier people with a less refined technology inhabiting North America and spreading as far south as Chile. And now clinching evidence in the mystery of the early peopling of America - Clovis or pre-Clovis? - for nearly all scientists appears to have turned up at a creek valley in the hill country of what is today Central Texas, 40 miles northwest of Austin. The new findings establish that the last major human migration, into the Americas, began earlier than once thought. And the discovery could change thinking about how people got here (by coastal migrations along shores and in boats) and how they adapted to the new environment in part by making improvements in toolmaking that led eventually to the technology associated with the Clovis culture. "

"People can talk. Other animals can't. They can all communicate in one way or another--to lure mates, at the very least--but their whinnies and wiggles don't do the jobs that language does. The birds and beasts can use their signals to attract, threaten, or alert each other, but they can't ask questions, strike bargains, tell stories, or lay out a plan of action. Those skills make Homo sapiens a uniquely successful, powerful and dangerous mammal. Other creatures' signals carry only a few limited kinds of information about what's happening at the moment, but language lets us tell each other in limitless detail about what used to be or will be or might be. Language lets us get vast numbers of big, smart fellow primates all working together on a single task--building the Great Wall of China or fighting World War II or flying to the moon. It lets us construct and communicate the gorgeous fantasies of literature and the profound fables of myth. It lets us cheat death by pouring out our knowledge, dreams and memories into younger people's minds. And it does powerful things for us inside our own minds, because we do a lot of our thinking by talking silently to ourselves. Without language, we would be only a sort of upright chimpanzee with funny feet and clever hands. With it, we are the self-possessed masters of the planet. How did such a marvelous adaptation get started? And if it's so great, why hasn't another species come up with something similar? These may be the most important questions we face in studying human evolution. They are also some of the least understood. But in the past few years, linguists and anthropologists have been making some breakthroughs, and we are now beginning to have a glimmering of some answers."

"MR. HOFFMAN: Konzi is a Benobo, a pygmy chimpanzee. He and his sister, Pambinisha, are the subjects of Doctor Sue Savage Rumbaugh's work. That work is questioning the widely accepted view that only humans are capable of language. For 20 years, she's been studying whether Benobos can learn language, working first with their mother, Matata, back in 1975. SUE SAVAGE-RUMBAUGH, Georgia State University: We were trying to do some very simple things like hold up an apple and teach Matata to hit the symbol for apple, and then we would give her an apple. She learned that. What we wanted then to be able to do was to have her use the symbol for apple whenever she was talking about an apple, whether she was intending to eat it or not, to know in a sense that the symbol represented apple, not just the fact that she was going to get apple. This, she couldn't learn, but fortunately, she had a youngster named Konzi, who was around and was playing while I was trying to teach her, and Konzi did learn, even though we weren't trying to teach him. What we found with Konzi was that simply by watching what we did with his mother, he was able to make this correlation so that he knew that the symbol apple represented apple, whether he got to eat one, whether his mother got to eat one, whether we were saying, no, Konzi, don't eat an apple, it still meant apple. "

"A few months after the World Trade Center attacks, a strange message appeared on a U.S. Army computer: "Your security system is crap," it read. "I am Solo. I will continue to disrupt at the highest levels." Solo scanned thousands of U.S. government machines and discovered glaring security flaws in many of them. Between February 2001 and March 2002, Solo broke into almost a hundred PCs within the Army, Navy, Air Force, NASA, and the Department of Defense. He surfed around for months, copying files and passwords. At one point he brought down the U.S. Army's entire Washington, D.C., network, taking about 2000 computers out of service for three days. U.S. attorney Paul McNulty called his campaign "the biggest military computer hack of all time." But despite his expertise, Solo didn't cover his tracks. He was soon traced to a small apartment in London. In March 2002, the United Kingdom's National Hi-Tech Crime Unit arrested Gary McKinnon, a quiet 36-year-old Scot with elfin features and Spock-like upswept eyebrows. He'd been a systems administrator, but he didn't have a job at the time of his arrest; he spent his days indulging his obsession with UFOs. In fact, McKinnon claimed that UFOs were the reason for his hack. Convinced that the government was hiding alien antigravity devices and advanced energy technologies, he planned to find and release the information for the benefit of humanity. He said his intrusion was detected just as he was downloading a photo from NASA's Johnson Space Center of what he believed to be a UFO. Despite the outlandishness of his claims, McKinnon now faces extradition to the United States under a controversial treaty that could land him in prison for years-and possibly for the rest of his life. The case has transformed McKinnon into a cause célèbre. Supporters have rallied outside Parliament with picket signs. There are "Free Gary" websites, T-shirts, posters. Rock star David Gilmour, the former guitarist for Pink Floyd, even recorded

"At one point in "The Wizard Of Oz," Dorothy (Judy Garland) picks an apple and the tree she picks it off protests: "Well, how would you like to have someone come along and pick something off of you?" Dorothy is abashed and she says, "Oh, dear - I keep forgetting I'm not in Kansas," by which she means she's now entered an alternate universe where the usual distinctions between persons and objects, animate and inanimate, human beings and the natural world that is theirs to exploit do not hold. In Kansas and, she once assumed, everywhere else, trees are things you pick things off (even limbs) and persons are not. Persons have an autonomy and integrity of body that are to be respected; trees do not. A person who is maimed has a legal cause of action. A tree that has been cut down has no legal recourse, although there may be a cause of action (not, however, on behalf of the tree) if it was cut down by someone other than the owner of the property it stood on. All this seems obvious, but what the tree's question to Dorothy shows is that the category of the obvious can be challenged and unsettled. I thought of this scene on the last day of my jurisprudence course when we came to the chapter on animal rights and the rights of objects . The question of the day was posed by Christopher Stone's landmark article "Should Trees Have Standing? - Toward Legal Rights For Natural Objects" (1972), and was answered, it would seem, in Genesis 1:26, when God gave man "dominion over the fish of the sea, and over the fowl of the air, and over the cattle and over all the earth and over every creeping thing that creepeth upon the earth." The dominion of man over animals and nature is established theologically, and it is established again in the modern period by classical liberalism's privileging of individual rights exercised by beings endowed (by either God or nature) with the capacity of choice. From Locke to Mill to Berlin to Rawls, the centrality of the

"Children are Hard-Wired with Universal Grammar Another important contribution of Chomsky to the science of language is the focus on language acquisition by children. Now, children can't memorize sentences because knowledge of language isn't just one long list of memorized sentences, but somehow they must distill out or abstract out the rules that go into assembling sentences based on what they hear coming out of their parent's mouths when they were little. And the talent of using rules to produce combinations is in evidence from the moment that kids begin to speak. "

"Debunking the social stigma around late risers, or what Einstein has to do with teens' risk for smoking. "Six hours' sleep for a man, seven for a woman, and eight for a fool," Napoleon famously prescribed. (He would have scoffed at Einstein, then, who was known to require ten hours of sleep for optimal performance.) This perceived superiority of those who can get by on less sleep isn't just something Napoleon shared with dictators like Hitler and Stalin, it's an enduring attitude woven into our social norms and expectations, from proverbs about early birds to the basic scheduling structure of education and the workplace. But in Internal Time: Chronotypes, Social Jet Lag, and Why You're So Tired, a fine addition to these 7 essential books on time, German chronobiologist Till Roenneberg demonstrates through a wealth of research that our sleep patterns have little to do with laziness and other such scorned character flaws, and everything to do with biology. In fact, each of us possesses a different chronotype - an internal timing type best defined by your midpoint of sleep, or midsleep, which you can calculate by dividing your average sleep duration by two and adding the resulting number to your average bedtime on free days, meaning days when your sleep and waking times are not dictated by the demands of your work or school schedule. For instance, if you go to bed at 11 P.M. and wake up at 7 A.M., add four hours to 11pm and you get 3 A.M. as your midsleep."

"The age of criminal responsibility acts as the gateway to the criminal justice system - under a certain age you are kept out. Most jurisdictions have this age barrier because it's widely understood children need sheltering from the criminal law consequences of their behaviour until they are developed enough to understand whether their behaviour is wrong. But what age is the right age? And how do legal systems deal with this difficult question?"

"This Big Think special series looks at what taste actually is-from both a scientific and sociological perspective-and why it is that we find some tastes so appealing and others disgusting. "

"What makes you, you? Is it how you think of yourself, how others think of you, or something else entirely? At TEDxYouth@Manchester, Julian Baggini draws from philosophy and neuroscience to give a surprising answer."