Definition: become environmental advocate: to become aware of environmental issues, or make somebody aware of environmental issues
go green: to become actively interested in environmental issues and support environmental issues.
as defined by Encarta
Go Green Division
Our Go Green division of Certified Natural, InternationalTM revolves around sound environmental choices. From green building to affirmation that your product has no pesticide residue, these certifications convey your diligent practice to protect the environment and those who inhabit it.