人类进化，万物初开，探索未知。村长寡妇的下面

　　Where did we come from? What makes us human? An explosion of recent discoveries sheds light on these questions, and NOVA's comprehensive, three-part special, "Becoming Human," examines what the latest scientific research reveals about our hominid relatives. 　　Part 1, "First Steps," examines the factors that caused us to split from the other great apes. The program explores the fo... (展开全部)