In February a thunderstorm in Japan had unexpected consequences. Teruari Enoto, an astrophysicist at Kyoto University, and his colleagues discovered that lightning produced more atmospheric radiocarbon.
A news article in Nature states:
“The main source of the carbon-14 in the atmosphere has generally been considered to be cosmic rays. In principle, lightning could also contribute to the supply. But it is not clear yet how much of the isotope is produced in this way, says Enoto, in part because it’s possible that not all bolts initiate photonuclear reactions.”
Many evolutionists used to think that radiometric dating methods were reliable, but a number of studies have shown that they were wrong.