The Natural Step (TNS) — a non-profit research, education and advisory group that helps corporations and communities move toward sustainability— wanted an updated brand as it opened its first U.S. office. Celery designed a comprehensive identity and collateral system that walks the talk of eco-innovation. The logo references the mythological symbol of regeneration: a serpent eating its own tail. The letterhead is perforated and scored for easy self-mailing, which eliminates the need for most envelopes.


