Everything we see today, all the animals and trees and houses, are all part of our planet Earth. But where do you think the Earth came from? In this episode, physicist Dr Niraj Lal tells us a story that started a long, long, long time ago.

We all have a heart beating in our chest. Sometimes our hearts beat fast, and sometimes they beat slow, but how do they work? In this episode, Louis wants to know what makes our hearts beat. Join our host Bri and Dr Shane Nanayakkara as they listen close to find out what our hearts are doing.

Have you ever noticed that some trees change in the Autumn? Their leaves can turn from green to red and yellow, and fall to the ground. In this episode Emma wants to know why trees lose their leaves, so tree scientist Matilda Brown helps us to solve the mystery of the falling leaves.

Did you know that smell is one of the first senses we develop? We can smell before we’re even born. Smells are so powerful they can bring back memories and even make us hungry! In this episode, Dr Rodrigo Suarez helps us sniff out some good and bad smells to find out where they're coming from.

Volcanoes are one of the most powerful forces on Earth. This week we go right up close with volcanologist Heather Handley and peek inside a volcano to see how they work. Turns out here’s a lot going on underground!

When birds sing, what do you think they’re saying? In this episode we head to the park with Simon Griffith to listen to the birds. Put your listening ears on and get ready to hear some amazing singers.

In this episode Winifred wants to know where our dreams come from, so psychologist Dr Shane Rogers and host Bri go on an adventure inside the mind to explore the incredible world of dreams.

Good news Imagine This fans, your favourite science based podcast will be returning in April.

In the meantime, here's a tantalising teaser revealing some of the topics, Bri and her team of experts will unpack in Season 3.

For bonus Imagine This content from Season 2 watch Bri and her friends answer some tricky questions about hiccups, clouds, mosquitos and more in 6 animated videos.

Here on Imagine This, we get lots of questions about SPACE, and in this episode, our good friend Professor Jonti Horner, from the University of Southern Queensland, is back to help us answer a big mystery... is there life in other galaxies? We go looking for Alien life in other parts of the Universe to see, who or what, is out there.

Here on Imagine This, we get lots of questions about SPACE. In this episode, our good friend Professor Jonti Horner, from the University of Southern Queensland, is back to help us answer a big mystery... is there life in other galaxies? We go looking for Alien life in other parts of the Universe to see who or what, is out there.