I think Dr Grace will come back. After all they did mention that the Na'vi are born twice and the second time they become part of the tribe. Plus Sigourney has experience with coming back from the dead lol. I do hope in the sequel we get to see more of Pandora. I expect the Humans will not be to happy with loosing and return with more firepower. after all at 20million a kg how can big business give that up.

Thank you Mayra, your words are right on target, the unfortunate thing is that the people who need to get the message and change their ways are to blind to listen and feel. If James Cameron reads this post "thank you so much for bringing this to us" if it were true i would swap sides in a heart beat, We humans are traveling the wrong road and we are almost to far to find our way back to change. Anyone who has not seen this move do the world a favor and go and loose yourself in pandora.