They say that the media should be encouraging scientists to do this also, presenting the findings openly and honestly at similar conferences.
This would certainly be in the interests of scientific truth—especially following the repeated findings of soft tissue in dinosaur bones, and now even seemingly irrefutable DNA in dinosaur specimens.
Beyond that timespan, the amount of the original C formed by irradiation of nitrogen by neutrons from the spontaneous fission of uranium, present in trace quantities almost everywhere.
For older samples, other dating methods must be used.
Carbon-dating Carbon dating, like other radiometric dating methods, requires certain assumptions that cannot be scientifically proved.