I believe Santorum is gun shy after all the flack he's taken for some of his previous outspoken and controversial positions. (gay issues, the Schiavo case etc)
He's worried about losing his Senate seat and is trying to play it safe.
You claimed that, "I love biology and bet I could run circles around you in any discussion on the topic", and yet both times I've tried to get you to engage in a discussion on that very topic, you vanished from the thread...
Ready now?
Brief excerpt with a link would be nice. Thanks.