Audio from our latest debate in Melbourne, Australia - featuring John Lennox and Peter Singer.

Audio from the Montana debate - featuring Christopher Hitchens and Larry Taunton.

Dinesh D'Souza debates Peter Singer, one of the most controversial and influential contemporary atheists, over the question "Can there be Morality without God?" at Princeton University.

Atheist provocateur Christopher Hitchens goes head to head with David Berlinski, author of "The Devil's Delusion: Atheism and its Scientific Pretensions."

Bestselling author, scientist, and atheist Richard Dawkins puts his assertions to the test when he debates his Oxford University colleague John Lennox, who is both a scientist and a Christian theologian.

Profs. Richard Dawkins and John Lennox go head-to-head once again for another remarkable match of the intellect - this time on their own home turf: Oxford itself. They return to the historical site of the famed 1860 evolution debate between Huxley and Wilberforce. Both scientists discuss atheism, the Christian faith, and the claims of their respective books.

Acclaimed atheist and journalist Christopher HitchensDinesh D'Souza, in the Gateway City on the existence of God. This debate pits two of the most eloquent and influential spokesmen for atheism and Christianity against one another in what is surely one of the most spirited discussions of its kind.

Leading atheist and acclaimed journalist Christopher Hitchens, author of God is Not Great: How Religion Poisons Everything, debates Christian apologist and Oxford Professor John Lennox over the question of God's greatness.

At the world's largest cultural arts festival in Edinburgh, Scotland, Christopher Hitchens and John Lennox debate whether or not the New Europe should jettison its religious past and welcome the "New Atheism." This debate was moderated by BBC's James Naughtie before an audience of over 1,400.