Astrophysicist Neil deGrasse Tyson explores 5,000 cosmic facts, wormholes, the billionaire space race, and what he'd ask aliens visiting Earth. He discusses how evolution shaped human behavior, why tribalism persists despite irrelevance, and why geeks now run the world—but may lack empathy in their tech creations. Your brain contains 100 times more synaptic connections than stars in the Milky Way, making human consciousness more complex than the universe itself.