Welcome to Iowa Public Television! If you are seeing this message, you are using a browser that does not support web standards. This site will look much better in a browser that supports web standards, but it is accessible to any browser or Internet device. Read more on our technical tips page.

Iowa Public Television

 
<p><strong>Note:</strong> If this video does not play, you may need to download the free <a href="http://www.macromedia.com/go/getflashplayer">Flash</a> video plugin for your web browser.</p> <p><a href="http://www.macromedia.com/go/getflashplayer" target="_blank"><img alt="Get Adobe Flash Player" src="graphics/plugins/get_flash_player.gif" border="0" height="31" width="88"></a></p>

NOVA scienceNOW | Detecting Life | PBS

Duration: 04:07

Once we find a planet that has Earth-like potential, how can we tell if there is life on it? Harvard astrophysicist Lisa Kaltenegger explains how scientists might sniff out life by looking at the planet's atmosphere.

Tags:

Topics:

Post Date: June 19, 2009