Most importantly, all proceeds from the track will go towards the Náttúra Campaign.
You can find it at nattura.info and at nattura.grapewire.net.
MP3: Björk - Nattura (ysi)
Björk (Feat. Thom Yorke) - "Nattura"
This video below (not the music video) pretty much embodies why I find Bjork so intriguing (and why I decided to even write this post).
Björk vs TV