Last week I reviewed part 1 of the upcoming NOVA miniseries, “Becoming Human.” It was a fair introduction to early human origins even if it was marred by persistent references to an illusory onward-and-upward march of human progress. Where the first episode primarily concerned itself with australopithecines, however, Homo erectus is the star of part 2.

The first part of this episode recapitulates what was covered in the last installment. Viewers are brought back to the African rift valley, the place where the “huge evolutionary step” between apes and humans took place. This is a bit of a mischaracterization. We are apes, just of a modified sort, and we are not all that different from the more “ape-like” members