Sarah Manski was talking to Sara Alvarado early last November when she was struck by a bolt of inspiration. A green-business entrepreneur, web designer, consultant, print and radio journalist and UW-Madison graduate student in life sciences communications, Manski was interviewing the principal of the Alvarado Real Estate Group about the firm’s green orientation. Manski was impressed by the way Alvarado had networked her business with green builders and contractors, and got to wondering about the way green ideas spread from business to business.