Evidence suggests that the bacteria to which the newly discovered DNA belongs may be nature's Rip Van Winkles, taking shelter inside salt deposits until they're brought back to the surface by outside forces. | iStockPhoto

World's Oldest Known DNA Discovered

DNA from 419-million-year-old bacteria may have belonged to the descendants of the world's first life forms.

Published On 12/17/2009
3:00 AM EST