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Remains of a possible human-like "Hobbit" species discovered on island of Flores in Indonesia, Homo floresiensis, that apparently survived until about 12,000 years ago and, therefore, must have lived alongside modern humans. Scientists disagree over the theory that a giant landslide in the Canary Islands could cause a mega-tsunami. Cassini space probe sends back pictures of Titan, Saturn's largest moon. How global warming is affecting the polar bears of Hudson Bay in the Antarctic.