We've already had a meteorite shower to remind us that Earth is just a small part of a much, much larger universe. If that wasn't enough perspective for you, PBS is offering a follow-up through NOVA's newly streaming "Earth From Space" documentary. The two-hour show illustrates how our planet's individual climates and ecosystems are really part of one larger unit, with ripple effects that we didn't always anticipate until an abundance of earth observation satellites made them clear. You'll have to be an American to watch before the documentary, at least before it arrives in disc form on April 2nd. Every Earth citizen can still watch the trailer after the break.