In classical mythology, the cypress tree is associated with death, the underworld and eternity.

Large numbers of people moved between Africa and Europe during recent and well-documented time periods such as the Roman Empire, the Arab conquest, and the slave trade, and genetic evidence of these migrations lives on in Europeans today.

A tiny mountainous region in southern Siberia may have been the genetic source of the earliest Native Americans.

The Encyclopedia of Life (EOL, www.eol.org) continues to expand at a record pace with the addition of new content and partners.

A new study examining the genealogies of early human pioneers suggests that settlers who were first to colonize a new region of the world produced more offspring than the settlers who followed them, giving them a selective advantage.