Alternative theories are that these creatures are either a small group of modern humans, Homo sapiens, whose brains and bodies have been prevented from growing normally because of a wasting disease, or that they are descendants of tiny-brained ape-like creatures.
New scans by a Japanese team which includes Dr Yousuke Kaifu of the National Museum of Nature and Science, Tokyo, shows that the hobbit's brain was a little larger than previous estimates had suggested.
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