With the presidential election just days away, most polls are showing the race between incumbent President George W. Bush and Senator John Kerry as being too close to call. In this hour, we'll talk about the differences -- and similarities -- between the science and technology policy positions of the two major presidential candidates. From stem cells and space exploration, to intellectual property rights and VoIP technology, we'll talk about where the candidates stand.

Plus, we'll take a trip out to Saturn's moon Titan. The Cassini space probe paid a close call to the moon this week, and sent back some pictures of the mist-covered planet that have scientists puzzled. We'll find out more. Call in with your questions and comments at 1-800-989-8255 (2-3 Eastern).