Gut Revolution (Part 2) Garry's Story
Garry has tried to lose weight, but could his gut bacteria be keeping him fat? Nutrition scientist Dr Joanna McMillan explores controversial science suggesting gut bacteria might be affecting our appetites and mood.
More from Series 18
Episode 1
Meet The Avatars
In the series return of Catalyst, Biomedical engineer Dr Jordan Nguyen examines virtual reality & how it could transform the way we learn & travel. He also meets some of the most life-like avatars scientists are creating.
Episode 2
Can Seaweed Save The World?
Professor Tim Flannery investigates how seaweed is helping to save the world - from growing the foods of the future, helping save the reef and even combating climate change.
Episode 3
Closing In: The Hunt For Alien Life
Will we soon find evidence of alien life? Scientists are currently in the throes of an unprecedented search for ET - and an answer to this long-pondered question may come sooner than you think.
Episode 4
The Day The Dinosaurs Died
66 million years ago an asteroid hit the planet. Now an expedition is underway to drill 1500m into the crater it created - the Chicxulub asteroid impact crater, aiming to unearthing the secrets that killed the dinosaurs.
Episode 5
Heartbeat: The Miracle Inside You
Heart surgeon Dr Nikki Stamp takes us into the amazing world of our hearts - revealing how they function, how can we look after them and shows us the latest science she uses to help fix them when they go wrong.
Episode 6
Death Dive: Into The Rings Of Saturn
After 20 years in space, NASA's Cassini spacecraft has begun the final chapter of its exploration of Saturn. It will end with a spectacular crash into its surface. Professor Alan Duffy will be there as the action unfolds.
