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- Josh Brolin - Narrator: We are born to survive in a world full of danger. Hardship makes us stronger. We dream impossible dreams, and make them real. But we are not one. Mankind's struggles shape our destiny. And in those struggles, new worlds, new futures, are born. Amidst the chaos of an unforgiving planet most species will fail. But for one, all the pieces will fall into place, and a set of keys will unlock a pattern for mankind to triumph. This is our story, the story of all of us.
- Dr. Mehmet Oz: Cooking our foods gives us a second stomach outside of our bodies. Now we begin to digest the fats, the carbohydrates, the proteins, before we chew the food, making it easier for us to digest it, which means we get a smaller stomach and therefore a bigger brain.