Sea Breeze:
DNA only has a half-life of 521 years
🤦♂️ This appears to be a hasty generalisation lifted from pop-science reporting. DNA doesn't have a prescribed 'half-life', such as in the manner of radioactive decay. The viability of a DNA sample depends on the conditions in which it were preserved. A sample of DNA could be destroyed instantly or be preserved for millions of years depending on the conditions.