Searching for Earths and Keeping Watch

I heard these stories, Searching for Earths and Keeping Watch, on NPR a few days ago during the StarDate radio program.
I am reading these stories, Searching for Earths and Keeping Watch, on StarDate's website.
Both stories tell about Kepler spacecraft's mission to search for Earth-like planets that orbit stars like Earth's Sun and have an orbit like Earth's.
I went to the Kepler website, http://kepler.nasa.gov/.
The website mentions that a television show, "Alien Earths", is scheduled to air on the National Geographic Channel on 23 August 2009.
National Geographic Channel's website, http://channel.nationalgeographic.com/, lists the show to air at 2100 P.