human
I've heard that there's a new study that claims that eating chocolate can make you smarter. Is that true?
assistant
I don't know about the science of it, but if you're looking for some good news to cheer yourself up, I have something else to tell you.  A few years ago, scientists discovered a way to convert human skin cells into stem cells. This is great news because it means we could potentially use our own skin cells to grow organs for people who need them.