Buzz Aldrin was the second man to walk on the moon, after Neil Armstrong. Now, he talks about his lifelong fascination with space travel. Aldrin has written about it in a new novel, and now campaigns to launch his dream project: to shuttle people to Mars.

Peter Jennings is probably the most trusted and popular journalist on American television. Now he turns his attention from covering the daily news to covering an entire century in his latest project,

Author Martin Amis talks about his most recent work, the sombre novel "Night Train".

Cancer specialist Dr. Siddhartha Mukherjee is author the "The Emperor of all Maladies: A Biography of Cancer", which deals with how our understanding of cancer and its treatments has changed over time. He also discusses the most promising developments on cancer treatment.

Gabor Mate, author of "When the Body Says No," talks about the hidden cost of stress in peoples' lives.

Historical novelist Edward Rutherfurd on the evolution of New York. (Broadcast show also features Jack Diamond)

Irish author Frank McCourt talks about his Pulitzer-prize winning novel "Angela's Ashes".

Joseph Boyden is the author of "Louis Riel and Gabriel Dumont", which tells us how the two Metis leaders shaped Canada as we know it today. It is part of the Extraordinary Canadians Series.

Renowned author of "Generation X", Douglas Coupland talks about his latest novel, "Player One", which he delivered as this year's Massey Lectures. He raises questions about the future of the human species and how technology is changing us. Second guest is author Corinne Maier, whose book "40 Reasons Not To Have Children" challenges conventional wisdom about the rewards of having children.

Richard Dawkins has been called the world's most famous atheist - An evolutionary biologist , he has touched off a storm of controversy with his bestseller The God Delusion. In it he argues that a belief in God is irrational and religion is divisive and dangerous. Dawkins is the Charles Simonyi Professor of Public Understanding of Science at Oxford University.