Conclusion of an analysis I did a couple of years ago looking at the effects of GW and PO on agricultural production.  

I'll roust through my papers and see if I can find it.

She believed in nothing; only her skepticism kept her from being an atheist. -- Jean-Paul Sartre

Europe, just as the US and Japan, is living beyond its ecofootprint ~ importing fossil fuels to convert to fertilizer to boost cereal grain production is an input that needs replacing, hence the interest in solid state ammonia production technologies to produce ammonia from renewable power sources.

I've been accused of being a Marxist, yet while Harpo's my favourite, it's Groucho I'm always quoting. Odd, that.