It's always worth reminding everyone of this: Haber process http://en.wikipedia.org/wiki/Haber_process http://en.wikipedia.org/wiki/Haber_process >>>Fertilize

It's always worth reminding everyone of this: Haber process http://en.wikipedia.org/wiki/Haber_process http://en.wikipedia.org/wiki/Haber_process >>>Fertilizer generated from ammonia produced by the Haber process is estimated to be responsible for sustaining one-third of the Earth's population I think I first read about that here at HN and it still sticks in my mind.