Nature is a remarkable thing.
In particular, it is much more resilient than we sometimes think, and responds to things we do to it in subtle and surprising ways. This is one of the themes, for me, of Urban Ecology. People like to think of cities as completely unnatural, but they are often full of life earning an existence in every crack, open space, basement, and rooftop.
Sometimes, though, nature just responds to our bad behavior with beauty.
Take Glass Beach:
(image by photoscot, all rights reserved.)
These are the remains of untold glass objects chucked off a cliff and down into the sea near Fort Bragg, in California. There was, apparently much more garbage as well, since cleaned up. But the ocean took all that glass for itself, and made new stones from it, to pebble the beach with, and something beautiful and unexpected is the result.
You can seem more images, and read a bit more here.
(tip' o the hat to Meredith Yayanos for the link)