The half-life of carbon-14 is under 6,000 years. No carbon-14 should be detectable in fossils claimed to be over 100,000 years old. But that is what has been found. Carbon-14 has been found in both dinosaur soft tissue and also in diamonds claimed to be many millions of years old.
Ian Juby shows how the presence of carbon-14 undermines the reliability of dating methods in the video below.
Weekly Bible Reading: Luke and John
David Pawson, Luke, Part 4, John, Part 5 Unlocking the Bible
Bible Project, Luke 1-9, Luke 10-24, John 1-12, John 13-21
Weekly Torah Readings
6 Shevat, 5782, Bo: Parashat Exodus 10:1-13:16; Haftarat Jeremiah 46:13-46:28