One Strange Rock
Awakening
S1 E9:
Of all life on Earth, why are we the only ones with the smarts to leave our planet? For nearly 3 billion years nothing had a brain. Even today it is estimated over 90 percent of life doesn’t need a brain to survive. So, what happened? What did our planet do to set in motion a chain of impossible and unlikely events that ultimately made us so much more intelligent than anything else?