New dating methods

Now, many of the same scientists who made the discovery have radically revised their estimate of the fossils' age, based on an exhaustive new analysis of the cave’s geology.

Instead of living 18,000 years ago, as they originally reported, the hobbit lived between 60,000 and 100,000 years ago—some 10,000 years before makes it “impossible to argue that it is a pathologically-dwarfed modern human,” says Russell Ciochon, a paleoanthropologist at the University of Iowa in Iowa City who was not involved in the study.

As a result, there is a changing ratio of carbon-14 to the more atomically stable carbon-12 involves actually counting individual carbon-14 atoms.

This allows the dating of much older and smaller samples but at a far higher cost.

Other critics, perhaps more familiar with the data, question certain aspects of the quality of the fossil record and of its dating.

These skeptics do not provide scientific evidence for their views.

A chief argument underpinning the diseased arrived in southeast Asia and Australia.decay or the rate of other cumulative changes in atoms resulting from radioactivity. The various isotopes of the same element differ in terms of atomic mass but have the same atomic number..One half-life is the amount of time required for of the original atoms in a sample to decay.Liang Bua is a cathedral-like cave with a high domed ceiling.The original excavations, conducted from 2001 to 2004, dug into four regions of the cave, including a couple of sites along its eastern wall, where some fossils were found.

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Although, organic materials as old as 100,000 years potentially can be dated with AMS, dates older than 60,000 years are still rare.

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