Italy Etna Volcano
Mt. Etna volcano spews lava during an eruption near the Sicilian town of Catania, Italy. Salvatore Allegra/AP

How do volcanoes erupt?

There are all kinds of volcanoes all over the world, but how are they formed? And how do they erupt? To find out, we’ll travel to the center of the Earth, and we’ll meet a NASA robot that’s going on a very special volcano mission.

• Read more about Volcanobot
• See photos from the studio and NASA at Instagram
• Did you love “Magma is Hot!” by Holly and Johnny? Hear more music from Holly Muñoz
• SPOILER ALERT: If you want to learn more about the mystery sound, head this way

Right-click to download episode transcript.

Sound effects in this episode from Freesound’s DrNI, jimsim, Corsica_S, PhreaKsAccount, daveincamas, vartioh, knova, e__, Hendrik, and AGFX.


This episode was originally released on February 22, 2015. Listen to that version here:

How do volcanoes erupt?
by Brains On!