A. Royden D'souza

Every human being carries a living chronicle of the past. Embedded in the sequence of four chemical bases—adenine, thymine, cytosine, and guanine—that make up our DNA is a record of every migration, every encounter, every mixture that brought our ancestors from the first hominins of Africa to the diverse populations of the present day. But this record is not written in plain language. The science of genetic dating provides the key to decrypting this record.