Remember Karen's Walk ? Sure you do. Well, now you can help us raise money for heart failure research just by searching on GoodSearch. We get a penny for every search. That's a pretty good deal, considering that you were probably doing lots of searches anyway. (There are other charities to choose from, and you can even set up your own if you have a cause of your own in mind. Poke around on their site for details.) That's been set up for a while, actually. I'd have linked to ...

Everyone's seen it in science fiction already, but now it's for real. There's a guy who has a prosthetic arm that he controls with his thoughts. It's hooked up to his nerves, so he can control it the way you normally control an arm, and it even transmits sensations back to him, which his brain interprets as coming from his arm (which, after all, they do)! This reminds me of a discussion I had last year with a fellow student about what constitutes a cyborg. I think they've definitely ...