It's from the MIT Technology Review, home of the new Twelve Tomorrows anthology series.
It's pretty danged great. My favorite quote:
Why does science fiction matter?
I think it matters a lot, because it's mind-opening. That's its great virtue. Ordinary fantasy opens minds, but not nearly as much. The Oz books [1900–1920] may open someone's mind a little bit. Alice in Wonderland  is kind of mind-opening. But a lot of science fiction is much more so. For instance, I could write a story in which a man has a conversation with his gun. I might do that sometime. Prince Valiant had his singing sword, and I always thought they could have done more with that than they did.