Dream Walking With Avatar

The special effects of 'Avatar' are all they were cracked up to be. I'm glad I went to see it. On the other hand, anyone who knows how I feel about 'nature' will appreciate that I identified more with the Sky People. Ryanne on the other hand was swinging off her seat. (Since we sat way in back, she could do that without bothering anyone.) Too bad they didn't leave out the minor cussing, shorten the battle scene, and rate the movie 'G'.
I missed a detail that I supposed was explained sometime during the show. If there was enough oxygen to burn wood, why couldn't humans breath?
Nancy Sherer