Historian Justin Champion on Early Modern Comet TheoryThose who watched in awe as the space craft Philae bounced its way onto a comet last November should hold a candle for William Whiston. Back in 1696 this British theologian, mathematician and acolyte of Isaac Newton published a book called 'A new theory of the earth'. In it he argued that comets were responsible for the origins of the earth and life upon it. This was what Philae was tasked to help us find out when it dotted down on comet 67P/Churyumov-Gerasimenko.Not only does this feel like a coup for early modern farsightedness it also reminds us that much of early science was not built in opposition to Christianity but in order to justify it. Whiston's investigation of the natural world (like those of his peers) was designed to show how the biblical account of creation was true.

If the universe exists what caused it to be? Theologian Giles Fraser examines the brilliant medieval scholar St. Thomas Aquinas' and his argument for God as the first cause of everything. It's part of a powerful body of ideas arguing for the logical necessity of the existence of God. But Giles also wonders how valuable these kinds of 'cosmological arguments' are for us today.

What put the Bang in the Big Bang?On the 7th of November 1919 an announcement was made to the great and good of the Royal Society. Photographs from the observations of a solar eclipse had just arrived in London. The images provided the proof of Einstein's General Theory of Relativity.The astronomer, Carole Mundell explains the significance of that moment and charts the steps that led from there to the generally accepted idea of the origin of our Universe in the energetic burst of the Big Bang.But what caused the Big Bang and what came before it? Answering one fundamental question immediately threw up the next. With the help of the mathematician, physicist and philosopher of science, Sir Roger Penrose, Carole aims to find out if those are questions mankind can ever answer.This is part of a week of programmes examining the origins of the Universe.

Exploring creation myths from Hindu, Greek, and Egyptian cultures, the podcast discusses the concept of a divine designer and how different civilizations perceive the origins of the universe. Delving into Daoist beliefs and David Hume's skepticism, the episode explores the mysteries of creation and the impact of science fiction on our understanding of the universe.

A new history of ideas presented by Melvyn Bragg but told in many voices.Each week Melvyn is joined by four guests with different backgrounds to discuss a really big question. This week he's asking 'How did everything begin'?Helping him answer it are Cosmologist Carole Mundell, Historian Justin Champion, Theologian Giles Fraser and Creation myth Expert, Jessica FrazierFor the rest of the week Carole, Giles, Justin and Jessica will take us further into the history of ideas about origins with programmes of their own. Between them they will examine early modern comet theory, Medieval Philosophy, The Big Bang and Hindu Creation myths.

Philosopher Angie Hobbs examines the concept of conscience or moral intuition and asks whether it stands up to rational scrutiny. In his Novel 'The Brothers Karamazov' the 19th century Russian writer Dostoevsky posed a moral dilemma – would it be morally right to murder an innocent child in exchange for Paradise on earth for all other humans. In other words does the end ever justify the means or are there actions which are simply unacceptable whatever the benefit? Angie Hobbs examines our moral intuitions and our sense of 'conscience' by talking through Dostoevsky's dilemma and asking what we really mean when we declare an act unconscionable. This programme is part of a week of programmes looking at the history of ideas around Freedom.

Criminal Barrister Harry Potter asks whether the law should enforce morals, and if so, which morals?Should the law tell us what we can and can't do? Or should it go further and tell us what is right, and what is wrong?Criminal Barrister Lawyer Harry Potter asks what a moral law might be, in a multi-faith multi-cultural Britain. His key thinker is Jeremy Bentham – 18th century English eccentric and radical – whose theory of Utilitarianism fused law and morality. Harry introduces the grisly tale of cannibalism which challenged the Victorian version of Christian law; he surveys the transformation of the law from the 1960s, with former Lord Chief Justice Lord Judge: from the imprisonment of homosexuals to gay marriage. And Professor Philip Schofield from University College London explains Bentham's radical concepts, which promised the greatest happiness for the greatest number of people and would have resulted in the tearing down of our great institutions. This programme is part of a week of programmes looking at the history of ideas around Freedom.

The eighteenth century writer Jeremy Bentham thought that telling right from wrong as simple: morally right things were the ones that increased the total of human happiness. Wrong things were the ones that increased the stock of suffering. His principle is known as utilitarianism.It sounds rational, but does it do justice to the way we actually think about morality? Some things seem wrong even when, according to utilitarianism, they are right.Recently, philosophers and psychologists have started to apply experimental methods to moral philosophy. In this programme, neuropsychologist Paul Broks looks at the recent research. Some experimenters, such as Guy Kahane in Oxford, have been putting people in scanners to see which bits of the brain are most active when they struggle with moral dilemmas. Fiery Cushman at Harvard has been getting people to carry out simulated immoral acts (such as asking volunteers to fire a fake gun at the experimenter) to see how they react to unpleasant but essentially harmless tasks. And Mike Koenigs at Wisconsin Madison University has been looking at how psychopathic criminals and people with brain damage deal with moral puzzles. One school of thought now suggests that utilitarianism, far from being the "rational" way to decide right from wrong, is actually most attractive to people who lack the normal empathic responses – people very like Jeremy Bentham, in fact. This programme is part of a week of programmes looking at the history of ideas around Freedom.

How do you make good moral decisions when you have no time to make them? This is a question that troubled Giles Fraser after he met soldiers who had served in Afghantistan. The moral codes Giles had studied required a lot of time for thinking and reflection but you simply don't get that when deciding whether to shoot on the battle field. This led Giles to think about the Greek philosopher Aristotle and his system of virtue ethics – a way of thinking about morals that emphases character rather than rules. Giles talks to former SAS soldier Andy McNabb and philosopher Nancy Sherman on how do you distinguish right from wrong in today's 'battle space' where the rules of engagement are no longer clear. And whether the answer is to be in a 2500 year old piece of Greek thinking. This programme is part of a week of programmes.

A new history of ideas presented by Melvyn Bragg but told in many voices. Melvyn is joined by four guests with different backgrounds to discuss a really big question. This week the question is 'How do I tell wrong from right?' Helping him answer it are Neuro-psychologst Paul Broks, Philosopher Angie Hobbs, Theologian Giles Fraser and Lawyer Harry Potter. For the rest of the week Paul, Angie, Giles and Harry will take us further into the history of ideas about morality with programmes of their own. Between them they will examine the idea of conscience and moral intuitions, the relationship between morality and the law, whether moral systems can work on the battlefield and what the brain seems to do when we are making moral decisions.