Movie studios are slowly incorporating environmental messages into mainstream film marketing.

Hollywood is certainly no stranger to environmental consciousness. From trading Hummers for hybrids to funding eco-awareness documentaries, movie stars and industry tastemakers are publicly extolling their own environmental causes and concerns. It was only a matter of time, then, before green messages began to color the publicity efforts of mainstream movies, too.

Implementing green strategies in movie marketing and PR campaigns is still an emerging practice, but it's one with ...