We’re excited about urban farming here at Inhabitat, and we’ve been following the work of green architect William McDonough for years, through his groundbreaking Cradle to Cradle manifesto and book, to the inspiring Ford Factory renovation to the new Method Factory with sprawling greenhouses on the roof in Chicago. So imagine our delight when we learned that William McDonough was tapped to design the master plan for a new “Silicon Valley of agriculture” in Aarhus,…