This week, a believer talks about doubt and an unbeliever talks about faith! Tom Frame is a theologian; his latest book looks at reasons why Australians don't believe in God. James LeFanu is a science writer; his latest book suggests science needs religion to make sense of the world, even though he still doubts. I'm sure both conversations will give you plenty to think about.

And, in our Single Life series, looking at how to move on from unrequited love.