[NoMoreNicksLeft]

Why not leave the night sky dark? It's like we have this 30,000 year old phobia that we can't ditch... there are no more tigers lurking in the darkness.

[pnut]

Seriously, I'd much rather have night vision prosthetic eyes and not make trees into light sources.

[logfromblammo]

Even if there were, wouldn't a more elegant solution be to engineer glowing tigers?

...perhaps not.

[mkstowegnv]

William Blake would probably agree http://www.poetryfoundation.org/poem/172943 http://en.wikipedia.org/wiki/The_Tyger

[vacri]

Because we light our cities to help us move around, not from some fear of predators.