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Whichever figure is correct, if they left by sea, were they capable of building boats or rafts? What about water, supplies, navigation etc.? We have no indication so far that they had any precursor technology. Even a documentary attempting to show how the inhabitants of Papua set out for Australia on bamboo rafts looked like wild speculation to me.
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18:32 15 January 2010
Historical records suggest the tragedy in Haiti did not release all the energy that has built up in the faults that run through the Caribbean
18:13 15 January 2010
An expedition to the coastal rainforests of Ecuador has discovered 30 new species of frog, a slug-sucking snake and a tiny gecko
18:00 15 January 2010
Today's stories on newscientist.com at a glance, including: the dangers of a high-information diet, how paired stars have multiple litters of planets, and an intelligent oil droplet
17:41 15 January 2010
Wine-inspired drugs that might cheat the biology of ageing are being tested, but new research questions whether they work as thought
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