“Modern humans were essentially like waves crashing on a beach, slowly but steadily eroding the beach away.” With this vivid simile, Princeton geneticist Joshua Akey describes a process that, until ...

The moment a creature dies, its DNA begins to break down. Half of it degrades every 521 years on average. By about 6.8 million years, even under ideal preservation conditions in cold, stable ...

To obtain high-quality, purified nucleic acids, scientists can use several different methods, including phenol-chloroform extraction, cesium chloride/ethidium bromide (CsCl/EtBr) gradient ...