by Nell Greenfieldboyce
http://www.npr.org/templates/story/story.php?storyId=99132608
All Things Considered, January 8, 2009 ยท Scientists long to understand how a bunch of chemicals on the early Earth transformed themselves into the first living creatures. Now one lab has made a self-replicating set of RNA molecules that the scientists say may mimic what might have happened during the early evolution [...]