Steve has a list of these predictions here.
John's blog is definitely worth checking out -- he's as close to a modern polymath as I've found. (He helped me by agreeing to read a recent article of mine in the draft phase, providing very helpful comments.) Lately he has turned some of his large attention to climate change.
He's one of the very first bloggers ever -- I first discovered his This Week's Finds in Mathematical Physics back in the 1990s, via gopher.
(If you don't know what gopher is, you need to study your Internet history, son.)