More Evidence that Gliese 581 Has Planets in the Habitable Zone (Dec. 14, 2007)
Nearly Earth-sized Planet, Possible Watery World Spotted Near Another Star (April 21, 2009)
New Earth-sized Exoplanet is in Star’s Habitable Zone (Sept. 29, 2010)
Could Chance for Life on Gliese 581g Actually Be “100%”? (Sept. 30, 2010)
Buzz About Gliese 581g: Doubts of Its Existence; Aliens Signals Detected (Oct. 2, 2010)
The Habitability of Gliese 581d (Oct. 19, 2010)
Update on Gliese 581d’s Habitability (May 6, 2011)
First SETI Search of Gliese 581 Finds No Signs of ET (June 5, 2012)