From Mercola:
http://articles.mercola.com/sites/articles/archive/2015/02/08/regenerating-soil.aspx?e_cid=20150208Z1_SNL_C_art_1&utm_source=snl&utm_medium=email&utm_content=art1&utm_campaign=20150208Z1_SNL_C&et_cid=DM68814&et_rid=835175377
Thanks for sharing. Her book, although not about permaculture, was actually one of the books that got me hooked on the idea anyways. As I see it, if the soil is regenerating and improving year over year, then it is an inherent success. That's just how good investments should work, plain and simple.
My favorite is a chocolate cupcake with white frosting and tiny ad sprinkles.
Our PIE page has been updated, anybody wanna test?