Woah waoh, high yields aren't free. Fortifying that soil to produce those yields has a cost -- both economic and ecological. Synthetic-N is just the beginning.

Woah waoh, high yields aren't free. Fortifying that soil to produce those yields has a cost -- both economic and ecological. Synthetic-N is just the beginning. And the "0-50%" sounds ballparkish to me. If you have any cites I'd love to take a look.