What role does religion play in the race for the Republican nomination for the White House?

Every year more than 100 million people around the world go on pilgrimage, the biggest mass migration of people on the planet. Two and a half million Muslims visited Mecca for last year's Hajj and over 600,000 visited Graceland to worship at the shrine of Elvis Presley. Tourist companies specialising in pilgrimage tours are expanding - it's big business. Ernie & his guests discuss whether there is something in the human psyche which seeks fulfilment from a physical journey, but one that has a spiritual motive, and also consider the growing phenomenon of cyber pilgrimage. Can a "virtual" journey in any way be seen as comparable?

This week's Beyond Belief comes from Scotland, where the Scottish government is considering legalising same sex marriage. A period of public consultation has provoked a huge response from many religious groups who are opposed, yet the opinion polls are generally in favour. Civil partnership ceremonies have been legal in Scotland since 2005 and include the possibility of a religious blessing afterwards. So why is there a need for this further step? What is marriage? Is it a human or a divine institution? And would such a law, if passed, lead to moral anarchy, as some have claimed?

Today's crisis in the global financial markets has produced much soul searching about the culture of greed which seems to permeate our society. At the beginning of the last century the German sociologist, Max Weber, proposed that there was a direct link between the Protestant Reformation and the rise in capitalism. And specifically, that hard work, combined with a moral attitude towards wealth, was directly linked to salvation. So is the loss of religious faith across the West linked to the current crisis in capitalism?

Shamanic cultures have been using substances for thousands of years to induce altered states of consciousness. X ray vision is said to be a key feature of the shamanic experience. This has been observed in Aboriginal rock art where the skeletons of animals are depicted. Cannabis is sacred to the Hindu God Shiva and even ancient Buddhists were known to use drugs. In India there was a substance called Soma, which is mentioned in the ancient Hindu scriptures, the Vedas, which probably used hallucinogenic mushrooms.

In the first of a new series, Ernie Rea and his three guests discuss Islam & the Veil.

France, Belgium & Italy have already banned the full face veil. Other countries are considering it. In Britain a Private Member's Bill on the subject was thrown out 18 months ago. But the subject prompts fierce debate amongst Muslims and non-Muslims alike. In a country like the UK, which prizes individual freedom, is it a basic human right? Or is it essentially divisive in promoting community cohesion? The Qur'an contains very few relevant verses and the word "hijab" literally means "curtain" but many new converts to Islam believe that the full veil is a religious obligation, but is it? Ernie and his guests get to the heart of what the Qur'an actually says and, more, importantly, how that has been interpreted.

Joining Ernie for a lively debate on Islam & the Veil are Fatima Barkatullah, writer and lecturer for the Islamic Education & Research Academy, Dr Shuruq Naguib, Lecturer in Islam at Lancaster University and Khola Hasan, Lecturer on Women's Rights under Islamic law & member of the Islamic Sharia Council.

Earlier this year the Irish Prime Minister launched an unprecedented attack on the Vatican, after an inquiry into the handling of allegations of child abuse found that the church had ignored its own child protection guidelines.

Around 60% of the people who attend church in London on a Sunday are of African or Caribbean origin. Some of their churches are celebrating their 50th anniversary this year. Many argue that they have the capacity to breathe fresh life into mainline British churches, and offer a version of Christianity uncorrupted by western liberalism. Ernie Rea and his guests discuss the history of these churches; they analyse the breadth of their appeal, and they ask how comfortably some of their theological and cultural beliefs sit with Western culture?

In the film "The Rite," released earlier this year, Anthony Hopkins plays the part of an American priest who travels to Italy to study at an exorcism school. The film is based on one of the Vatican's Chief Exorcists, Father Gary Thomas, who says his work brings him into daily contact with demons.

The idea that human beings can be possessed by evil spirits clashes with scientific and medical explanations of mental disturbance, but the belief persists in many Christian and other religious circles. Exorcism is widely practised in charismatic and Afro Caribbean churches and even the Church of England has official exorcists or deliverance ministers.

Joining Ernie to discuss Exorcism are the Rt Rev Graham Dow former Bishop of Carlisle; Dr Simon Dein, a Psychiatrist with an interest in the Anthropology of Religion; and the Rev Elizabeth Baxter, Executive Director of Holy Rood House Therapeutic Centre.

When the hijackers directed their planes into the Twin Towers in New York, it was religion as well as terrorism which hit the headlines. The hijackers had the name of their God on their lips. For many it was a sign that the Clash of Civilisations, the conflict between the Muslim and Christian worlds, had become a dreadful reality. But the events led to an upsurge of interest in Islam and in the question of how religious zealots could justify the wholesale destruction of civilians by reference to its God? What sort of God could that be? Is the God that Muslims worship the same as the Christian God? Wherein lie the differences.? 10 years on the questions remain.

Joining Ernie to discuss these questions are Miroslav Wolf, Henry B Q Wright Professor of Theology at Yale Divinity School; Mona Siddiqi Professor of Islamic Studies at the University of Glasgow; and Father Damien Howard, lecturer in Muslim-Christian Relations at Heythrop College in the University of London.