"NanoEHS" and "green chemistry" have become staples in nearly every undertaking or conversation involving nanotechnology. Is this change in mindset helping the community make progress in designing greener materials and processes, and supporting effective policy? Is the promise of nanomaterials innovation for energy, security, medicine, and for resource conservation and environmental protection being advanced or slowed down by all of this attention? It appears that, although many have embraced the principles of green chemistry and recognize the need for sound science to inform policy,