What are the environmental challenges facing cities of the future? Geography and planning lecturer Dr Donna Houston predicts what life in large urban centres might look like in years to come.
Macquarie astrophysicists explain how an explosion triggered by the collision of neutron stars 130 million years ago was detected for the first time, and why this astonishing event has made global headlines.
We journey to the final frontier with Dr Lee Spitler and discuss life among the stars and ask him to tackle the age-old question: are there extra-terrestrial lifeforms out there?
There's near academic consensus around the existence of climate change but less so around the tools to reduce it. Maybe communication is the best tool for tackling one of the greatest issues of our time.