HOBBITS

Scientists say they have found skeletons of "hobbit sized people."

Which is interesting on at least two levels. First, that a separate species of humans was in existance until 500 years ago, and secondly, that they are referred to as people, as opposed to just hominids. It appears that there's a line beyond which we are willing to see organisms, even of a separate species, as akin enough to use to consider people.

This obviously leads to the question, "are there others?"