A new study by Dean Falk of the Florida State University and her colleagues sugggested that the human "Hobbits" found on an Indonesian island in 2004 are a completely new species:
The researchers believe the 1m-tall (3ft) people evolved from an unknown small-bodied, small-brained ancestor, which they think became small in stature to cope with the limited supply of food on the island.
The little humans are thought to have survived until about 12,000 years ago, when a volcanic eruption devastated the region.
Link - via eBaum's World