My wife and I were lucky enough to see a special showing of "earth" earlier this week.
WARNING SEMI-SPOILERS AHEAD
We are fans of the Planet Earth series that was shown on the Discovery Channel and own the DVD series. We were both excited about the film. If you are a fan of Planet Earth you will love the film. However, a LOT of the same footage is used from the tv series, this was good and bad. The movie is basically an extended version of the first film in the series "Pole to Pole". I was hoping for new footage but seeing the spectacular scenes on the big screen in surround sound made for a good movie, the theater shook during a stampede scene. We were sitting in the first row (theater was PACKED an hour before the show) and it felt like an imax experience. There is a new musical score and narration so it is not identical to Planet Earth. We loved the music from Planet Earth and the new musical score was even better! Warning to parents with young kids, there is a lot of 'death' portrayed as the circle of life. It is not gory but animals do die, including slow motion 'capture' scenes (beautifully shot scenes by the way). There were definately some sad kids in the audience. Suprisingly there is no strong message or real story but is more about documenting the seasons that change our planet and all who live on it. Overall a good movie and go see it to support the planet! Just sit back, relax, learn something and enjoy the beauty that surrounds us.
Be sure to stay for the credits, especially the very end.
Rumor has it this will be the first of many Disney Nature films to come!