OMG, this is the episode you’ve been waiting for… an all-out, wall-to-wall, super-duper Mystery Sound show. Guess the sounds sent in from listeners and scientists alike. Plus, if you like having fun (and dancing), stick around to the end of the episode. An extra-special audio treat awaits. Shhhhhhhhhh!

OMG, this is the episode you’ve been waiting for… an all-out, wall-to-wall, super-duper Mystery Sound show. Guess the sounds sent in from listeners and scientists alike. Plus, if you like having fun (and dancing), stick around to the end of the episode. An extra-special audio treat awaits. Shhhhhhhhhh!

Do spiders give you the heebie-jeebies? If so, we want to change your mind about our eight-legged buddies!

Do spiders give you the heebie-jeebies? If so, we want to change your mind about our eight-legged buddies! In this episode we’ll explain how spiders weave those amazing webs and stick to walls. We’ll also hear how spider venom is being used to find new medicines for humans. Plus, did you know some spiders can fly and others can live underwater? All this and a Mystery Sound!

Oh snap – this diving bell spider is swimming!

In this episode, Dr. Ken Libbrecht answers all of our snowflake questions: How are snowflakes made? Why are they different shapes? How is it that they’re all unique? And how does a scientist who lives in southern California study snow?

From a distance, snowflakes may all look the same, but they are not. In fact, there are lots of different shapes of snowflakes — not just those classic shapes you might try to replicate with paper cut-outs.

In this episode, Dr. Ken Libbrecht answers all of our snowflake questions: How are snowflakes made? Why are they different shapes? How is it that they’re all unique? And how does a scientist who lives in southern California study snow? And, he also lets us in on his brush with a couple Arendelle princesses.

If you’re looking for some fun snowflake activities to do at home, Ken’s provided this great list — and you don’t need to live in a cold climate for all of them.

Ken also has a new book featuring many of his gorgeous snowflake photos.

Music in this episode by Podington Bear.