Do you ever worry that Steve Rogers (aka Captain America) wasn't really giving informed consent when he agreed to become enhanced? Or are curious as to why someone might choose a bionic hand over a real one? The awesome Maggie Koerth-Baker of boingboing.net and I had some of the same questions. We chat about the ethics of superheroes and our perception of science in this week's Science Saturday on bloggingheads.tv. Enjoy!