![Popular Science Radio show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/031/052/small/popular-science-radio.png)
Summary: To finish off this hour of Popular Science Radio, host Karl Champley and co-host Dr. Cort Stoskopf cover the FocusTwist app for iPhone and how it works. Also, Karl tells a story about his encounter with the Google Earth car and the impressiveness of this technology.