Ancient DNA decays roughly four times faster in the Caribbean than in temperate North America and about 14 times faster than in subpolar Greenland and Alaska, and modelling the slowest-decaying of the 75 dated samples that still held enough DNA puts the practical limit on recoverable DNA there at roughly 5,000 years
ScienceBlog.com,
Canímar Abajo, a limestone rock shelter in Cuba, produced some of the best-preserved samples in a new survey of ancient DNA…