This week, you and Dan are setting sail to take a closer look at what's in the sea! Amy Meek, returning guest of the podcast and founder of Kids Against Plastic, tells us all about her mission to look after the environment and what inspired her to start this incredible initiative.

You've been asking away, and Dan has some answers - why does ice sometimes make a cracking noise when you put it in water, and how DO we see? Once we've learnt about what not to put in the ocean, we discover a pufferfish with a very dangerous trait... all that and more to come in this week's Science Weekly!

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