Salt letters that spells words becoming less and less relevant as they fade.
While spending Winter in Canada, I became curious of the side effects of salt being used on snowy roads, and then dumped along with tons of snow in the nearest river. I covered with salt a large stencil laid in the grass, writing the word always out of white crystals bound to melt, disappear, and prevent the grass from growing back.
For months, I regularly went back to the site to photograph the evolution of the letterform. As the salt letters were slowly fading away, the grass surrounding it started to die, burnt by the sodium, leaving a well defined scare in the green surface, where nothing would grow for a while.