article_snippet.sent: Scientists have revealed a sophisticated new dating .
article_snippet.sent: geologist Darryl Granger of Purdue University in Indiana, whose . research appears in the journal Nature.
article_snippet.sent: Sterkfontein Caves to gauge Sterkfontein Caves age.
article_snippet.sent: The team now plan to present The team findings at the Paleoanthropology Society in San Francisco next week.