In Our Time

Melvyn Bragg and his guests discuss the work of the anthropologist Claude Lévi-Strauss. One of twentieth-century France's most celebrated intellectuals, Lévi-Strauss attempted to show in his work that thought processes were a feature universal to humans, whether they lived in tribal rainforest societies or in the rich intellectual life of Paris. During the 1930s he studied native Brazilian tribes in the Amazonian jungle, but for most of his long career he preferred the study to the field. He was the leading exponent of structuralism, a school of thought which was influential for decades, and was involved in a famous debate with his friend Jean-Paul Sartre, who resisted many of his ideas. His books about the nature of myth, human thought and kinship are now seen as some of the most important anthropological texts written in the twentieth century.

With:

Adam Kuper

Christina Howells

Vincent Debaene

Producer: Thomas Morris.

Melvyn Bragg and his guests discuss cosmic rays. In 1912 the physicist Victor Hess discovered that the Earth is under constant bombardment from radiation coming from outside our atmosphere. These so-called cosmic rays have been known to cause damage to satellites and electronic devices on Earth, but most are absorbed by our atmosphere. The study of cosmic rays and their effects has led to major breakthroughs in particle physics. But today physicists are still trying to establish where these highly energetic subatomic particles come from.

With:

Carolin Crawford

Alan Watson

Tim Greenshaw

Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the Icelandic Sagas. First written down in the 13th century, the sagas tell the stories of the Norse settlers of Iceland, who began to arrive on the island in the late 9th century. They contain some of the richest and most extraordinary writing of the Middle Ages, and often depict events known to have happened in the early years of Icelandic history, although there is much debate as to how much of their content is factual and how much imaginative. Full of heroes, feuds and outlaws, with a smattering of ghosts and trolls, the sagas inspired later writers including Sir Walter Scott, William Morris and WH Auden.

With:

Carolyne Larrington

Elizabeth Ashman Rowe

Emily Lethbridge

Producer: Thomas Morris.

Melvyn Bragg and his guests discuss Gnosticism, a sect associated with early Christianity. The Gnostics divided the universe into two domains: the visible world and the spiritual one. They believed that a special sort of knowledge, or gnosis, would enable them to escape the evils of the physical world and allow them access to the higher spiritual realm. The Gnostics were regarded as heretics by many of the Church Fathers, but their influence was important in defining the course of early Christianity. A major archaeological discovery in Egypt in the 1940s, when a large cache of Gnostic texts were found buried in an earthenware jar, enabled scholars to learn considerably more about their beliefs.

With:

Martin Palmer

Caroline Humfress

Alastair Logan

Producer: Thomas Morris.

Melvyn Bragg and his guests discuss the Essays of Michel de Montaigne. Born near Bordeaux in 1533, Montaigne retired from a life of public service aged 38 and began to write. He called these short works 'essais', or 'attempts'; they deal with an eclectic range of subjects, from the dauntingly weighty to the apparently trivial. Although he never considered himself a philosopher, he is often now seen as one of the most outstanding Sceptical thinkers of early modern Europe. His approachable style, intelligence and subtle thought have made him one of the most widely admired writers of the Renaissance.

With:

David Wootton

Terence Cave

Felicity Green

Producer: Thomas Morris.