Prof Michael Gillings from Macquarie University, A/Prof Dieter Hochuli from Sydney University and A/Prof Rick van der Zwan from Southern Cross University battle it out for animals, insects and humans in this rematch of the Battle of the Animal Professors. James O'Loghlin judges each pitch in five rounds. Who will win?

Listeners ask questions on what they don't get, and other listeners provide the answers.

Listeners ask questions, that are answered by other listeners.

What effect does new technology have on the brain? How does using a smartphone or tablet affect you? Or is it more about changes in social interactions? Professor Ian Hickie is from the Brain and Mind Institute from the University of Sydney chats with James O'Loghlin.

What happens when you need to make savings in an organisation? How do you work out where the cuts should be made? Ronan Gilhawley is partner in charge of Strategy and Planning at KPMG. It's his job to go into companies and help them identify ways to streamline costs. He's speaking with James O'Loghlin.

Pastor Andy Gorley works in youth outreach. Using red frogs as his entry ticket, Gorley and his team go to parties and work to prevent problems that arise when teenagers drink too much.

John, better known as 'Swanee', joined the Australian music scene when he was just 14 years old, performing first as a drummer, then as a singer with many of the nation's iconic bands and as a successful solo artist. After living the rock and roll lifestyle for decades, Swanee, chose to clean up his act in 2000 and now helps young musicians to focus on creativity without drugs and alcohol.

What's it like to live knowing you will die?

Have your questions answered.

What are the 5 most amazing insects, land animals and sea animals? Three of the country's leading professors battle it out on behalf of the natural world. Professor Michael Gillings from Macquarie University takes on A/Prof Dieter Hochuli from Sydney University and Professor Jamie Seymour from James Cook University in a survival of the fittest contest. Emma Crowe judges each round. Which animal is the most amazing?

David Savage is a nominee for the 2015 Australian of the Year, he is a former federal police officer, a peace keeper, an AID worker who has been based all over the world including East Timor, Papua New Guinea and Sri Lanka.

Keith Bunker was diagnosed with liver cancer in his mid 40's and for the last few months he shared his experience of living with a terminal illness with James O'Loghlin. Last week Keith's condition deteriorated and he died on Thursday morning.

Listeners answer other listeners questions.

David Nicholl's book 'One Day' sold 5 million copies globally and was turned into a film starring Anne Hathaway. He's just released his latest book 'Us' about what happens in a marriage when the children leave home. He describes the book and writing process with James O'Loghlin.

Listeners ring in to James O'Loghlin with questions that perplex them, and other listeners offer answers to these questions.

Rosie Batty's son was killed by his father in February 2013. Since this tragedy, Rosie has raised awareness of domestic violence and the treatment of people involved in the system. She's a finalist in the Australian of the Year Awards for the state of Victoria. Listen to her moving and inspiring story.

For the past six months Keith has been speaking with James O'Loghlin about what it is like living with a terminal illness. Keith offers an insight into what is usually a very private place, he does this with candor, humour and without a moment of self-pity. You can read more about Keith and his family at their blog 'The Bunker Girls'.

Each week, listeners ask questions they don't get, and other listeners answer them.

Professor Ian Hickie from the Brain and Mind Institute at Sydney University explains the science behind Depression and Nostalgia.

Each week, listeners ask questions they don't get, and other listeners answer them.

What would the world look like without wind? Andy Pitman Director of the ARC Centre of Excellence for Climate System Science at UNSW speaks with James O'Loghlin about a bleak world without wind.

Each week, listeners ask questions they don't get, and other listeners answer them.

In his new book 'The Rules of Engagement', media executive Kim Williams, not only reflects on his sudden departure from News Corp in 2013 but muses on the qualities required for leadership and the uncertain future that continues to confront Australian media organisations.

A caller asked if humans could shrink to miniature size, which would be the better environment to live in: a bee hive or an ants nest? James O'Loghlin asked Associate Professor Dieter Hochuli from the University of Sydney what he thinks.