物理学家 占．艾尔─卡利里 正致力破解一个跨越六亿年的谜题：人类大脑究竟是如何进化而来。本集探讨灵长类祖先进入森林后，大脑如何因应生存挑战而进化——穿梭丛林、寻找食物、避开掠食者等等。然而真正的突破，来自大脑学会「社交」——我们天生能读懂面孔、理解情绪、并协作共事。这种社交「超能力」开启了人类智慧的进程。透过脑部扫描、化石发现与尖端研究，揭示了为何人类充满情感、依赖社交的大脑如此难以模仿。从古老森林到现代实验室，这是一段非凡的故事，讲述我们如何成为今日这种能思考、能感受、能社交的生物。

Physicist Jim Al-Khalili is on a mission to crack the 600-million-year mystery of how our brains evolved. This episode explores how, when our primate ancestors moved into forests, their brains had to rapidly adapt to survive—navigating branches, spotting food, and avoiding predators. But the real breakthrough came when the brain learned to be social: we evolved to read faces, understand emotions, and cooperate. This social “superpower” ignited the rise of human intelligence. Through brain scans, fossil evidence, and cutting-edge research, we discover why our emotional, socially-driven brains remain so difficult to replicate.