Carbon dating a scam

How do scientists know how old an object or human remains are?

What methods do they use and how do these methods work?

"The radiocarbon dating technique may significantly underestimate the age of sediment for samples older than 30,000 years,” said the authors of the report from the Chinese Academy of Sciences and Germany’s Leibniz Institute for Applied Geophysics.

It is used in dating things such as bone, cloth, wood and plant fibers that were created in the relatively recent past by human activities.

Since the 1940s, scientists have used carbon dating to determine the age of fossils, identify vintages of wine and whiskey, and explore other organic artifacts like wood and ivory.

But the method had one major flaw: it didn’t account for changes in the proportion of radioactive and non-radioactive carbon in the environment; and if these had changed, the estimate would most likely be wrong.

Many events can affect the levels of carbon-14 in the atmosphere, such as the burning of fossil fuel or the detonation of an atom bomb.

He lives in Beijing with a beautiful wife and two lovely kids." data-title="Stephen Chen" data-html="true" data-template=" Radiocarbon dating, which is used to calculate the age of certain organic materials, has been found to be unreliable, and sometimes wildly so - a discovery that could upset previous studies on climate change, scientists from China and Germany said in a new paper.

Their recent analysis of sediment from the largest freshwater lake in northeast China showed that its carbon clock stopped ticking as early as 30,000 years ago, or nearly half as long as was hitherto thought.The chemist who developed carbon dating, Willard Libby, won the Nobel Prize for his work.“Seldom has a single discovery in chemistry had such an impact on the thinking in so many fields of human endeavour,” one of Libby's colleagues wrote at the time, according to the Nobel Foundation.But the new study suggests that the sediment might be over 80,000 years old, possibly formed during an ice age."The carbon-14-based mega-lake hypothesis was even incorporated into modelling work to interpret regional climate dynamics,” the paper reported.The technique involves comparing the level of one kind of carbon atom—one that decays over time—with the level of another, more stable kind of carbon atom.

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