You may have heard the phrase 'once in a blue moon' to describe something rare. But what is a blue moon? Is it actually blue? Find out this week!

Our hearts work incredibly hard to keep us alive. Join us this week to find out more about this crucial organ - it's hearty stuff!

How does a caterpillar turn into a butterfly? Join us this week as we follow this incredible journey.

Join us this week as we head to the beach and explore the science on our shores. Find out where sand comes from and where it gets its golden colour.

Join Kieren McGovern from Herriot-Watt University's CDT in Applied Photonics as he dives into the science of sleepwalking in this special episode!

What is a seagrass meadow? Join us on this week's episode as we dive into this often forgotten habitat and discover why it’s so important.

What are all those different letters and numbers on a bottle of sunscreen? In this week's episode we discover exactly what sunscreen protects us from and why it’s important, even here in Scotland!

In this week's episode we take some time to stop and listen to the dawn chorus. Is it really as relaxing as we think it is?

Scotland can be a very wet place to live, but that’s good, because it means we have one of the rarest habitats on earth right on our doorstep. Join us this week as we explore Scotland’s temperate rainforests.

A Spark of Science is 200 episodes old! We thought we’d celebrate by sharing some fascinating facts about the number 200.