New dating methods

Far from being data, these dates are actually interpretations of the data.

As discussed before, the assumptions influence the interpretation of the data.

Most scientists and many Christians believe that the radiometric dating methods prove that the earth is 4.5 billion years old.

It is these highly consistent and reliable samples, rather than the tricky ones, that have to be falsified for "young Earth" theories to have any scientific plausibility, not to mention the need to falsify huge amounts of evidence from other techniques.

14C, with a half-life of 5730 years, decays back to 14N …

As long as the production rate remains constant, the radioactivity of natural carbon remains constant because [the] rate of production balances the rate of decay.

If the new evidence holds any weight, then the popular theory that modern humans and Neanderthals co-existed–and possibly even interbred–for millennia has just been shot down, especially as another hugely accepted theory shows modern humans didn´t settle in the region until 42,000 years ago. The team found the vast majority of the bones contained insufficient collagen to be successfully dated.

The new study used the improved dating method “ultrafiltration,” a technique that removes modern carbon that can contaminate ancient collagen in bones. Rachel Wood, of Australian National University (ANU), and her colleagues tested 215 bones from 11 sites where previous radiocarbon dating had supported the later survival of Neanderthals. But of those that could be tested, Wood and her colleagues found enough evidence that placed the earliest record to be about 50,000 years ago at two separate sites.