How interesting. The article is 4 pages; WOW. We probably don't know the half of what has been on our earth.

http://abcnews.go.com/Technology/story?id=198867&page=1

Subsequent finds of other similarly sized, 3-foot-tall humans with brains the size of grapefruits in a cave on the Indonesian island of Flores suggest these 18,000-year-old specimens weren't a quirk of an ancient hominin, but part of an entire species of miniature people whose existence overlapped with that of modern Homo sapiens.

"We now have the remains of at least seven hobbit-sized individuals at the cave site, so the 18,000-year-old skeleton cannot be some kind of 'freak' that we just happened to stumble across first," said Bert Roberts, an anthropologist at the University of Wollongong in New South Wales, Australia, and co-author of the study about the find in this week's issue of the journal "Nature."