Compared to other species, human beings have been on earth for a very short time. For millions of years, dinosaurs dominated. Then came an evolutionary upheaval-- the continents shifted, the climate changed, and the ape emerged. In Africa, our primal ancestors began to make huge biological leaps forward. But what mysterious phenomenon allowed humans to branch off from the ape?
Name | Type | Role | |
---|---|---|---|
Walter Cronkite | Guest Star | ||
Peter Nicholson | Director |