Lyrics:

All natural and technological processes proceed in such a way
That the availability of the remaining energy decreases
In all energy exchanges, if no energy enters or leaves an isolated system
The entropy of that system increases
Energy continuously flows from being concentrated
To becoming dispersed, spread out, wasted and useless
New energy cannot be created and high grade energy is being destroyed
An economy based on endless growth is

Unsustainable
You're unsustain-
Unsustain-unsustainable
Unsus-unsus
Unsustaina-unsustainable
Unsus-
Unsustain-unsustainable
Unsus-unsus
You're unsustainable
Unsustaina-unsustaina-unsustainable

Run, run
Run
Oh-ooh-ooh
Ooh-ah-ah

The fundamental laws of thermodynamics will place fixed limits on technological innovation and human advancement
In an isolated system, the entropy can only increase
A species set on endless growth is

Unsustainable
Unsus-
Unsustain-unsustainable
Unsus-unsus
Unsustaina-unsustainable
Unsus-
Unsustain-unsustainable
Unsu-unsu-
You're unsustainable