Shots of planet earth, satellite photography, volcanoes, earthquakes, rainforest. Main message: earth is home to all of us, let's preserve it. The space and aerial photography are beautiful. Spectacular is the view of a lightning storm as seen from space. Footage of a hurricane, however, did not appear threatening. Sheet metal flying off a small house's roof, a man leaning into the wind.
Things I expected to see but didn't: a storm at sea, a twister, a nice volcano eruption, a geyser, a large crowd of people. The only people we see are two cosmonauts in orbit taking pictures, and some guys cutting trees.
The narration is rather primitive, sometimes mind-numbingly so, as in the end, where the voice-over enumerates those to whom earth is home: "Earth is home to Jews and Arabs; It is home to Russians and the Chinese; It is home to Germans and Italians", and so on and on, until (surprise!) "It is home to ALL of us".
Some educational facts are given about how many tons of pollutants we emit and millions of acres of forest we destroy each year. These sound horrifying, but to make sense, they need to be put into perspective (there are billions of bacteria in my mouth, but that doesn't mean I'm about to die). How much forest do natural fires destroy each year? How many acres of forest naturally grow back? How much deadly pollution does an average active volcano emit?
The 3D California valley fly-through was visually disappointing (have they heard of texture mapping?).
Overall, a very enjoyable experience. The DVD is definitely worth having, although I won't be watching it for a second time in full any time soon (as I watched Baraka).