This show was loosely based around the idea of the four elements:
1. Air (breathing sounds, Tuvan throat-singing (a recent obsession of mine which will be revisited in a future episode), wind sounds)
2. Water (waves, ships, whales, the leaking air conditioner in the air studio)
3. Earth (plate tectonics, seismics, digging, Mt. St. Helens, etc.)
4. Fire (um, fire 
)