They finally managed to squeeze in EVERY politically correct concept in Hollywood into one movie.. Yet, they fail to explain why beings from another planet care if we destroy our enviroment (the main PC topic). Since they had to take the form of of humans to visit this planet, the earth was not "eco-friendly" to them to start with. So, why not just wait until we make the planet so uninhabitable that we all die off? The whole movie was contrived just to advance Hollywood's "starry-eyed" view of how they believe the world should be.

Even in IMAX the special effects are at best, mediocre so there's no reason to waste your hard earned money to see it on the big screen. If you work for a living, or have three working brain cells left, skip this one.