Shroud of turin carbon dating wiki
There are the usual cranks who try to work up some tortured logic to attempt to prove creationism, or some variant of a 6000 year old Earth.
Either by assuming what they wish to prove, or by blandly ignoring how it actually works.
One example is the discovery that solar flares correlate with the decay rate of a particular radioactive isotope; this finding has been confirmed independently by multiple laboratories.
What is more, it was found that the change in the decay rate actually preceded the detection of the solar flare itself, with the difference in arrival time corresponding almost precisely with a particle that was traveling at the speed of light.
If you've found carbon to date in a fossil, it's a modern contaminant, there's no bone there, it's rock!
Given that carbon dating is not a great deal more than 50 years old as a scientific tool, and it was a considerably blunter and less accurate version back then than now, it seems difficult to understand how an issue so long ago can be meaningful.
Pertaining to the accuracy of our dating, I think the impact will be less than revolutionary, but almost certainly nontrivial.
The story was later elaborated in the 11th century by adding that Christ gave her a portrait of himself on a cloth, with which she later cured Tiberius.
Changes in the Earth's climate can affect the carbon flows between these reservoirs and the atmosphere, leading to changes in the atmosphere's 14C fraction.
As the graph to the right shows, there is an overstatement of the age of the sample of nearly 1000 years in an uncalibrated dating of 7000 BP.
Again, DUH, it's a fossil, there's no carbon in it!
The bone has long ago rotted away and has been replaced by rock.