The small 18,000-year-old human skull discovered in Flores Island, Indonesia, in 2003, provoked quite a stir. Many people came up with hypotheses of a new hominid species, Homo floresiensis, that evolved locally from Homo erectus and co-existed with modern humans, Homo sapiens.
Others suggested that the skull could have belonged to a person suffering from a genetic condition known as microcephaly ("small head").
The researchers realized that the brain of the Flores skull (at 400 cc, less ...
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