Thanks to all of your suggestions, I've added the Google translate widget to this blog.
The widget is on the right sidebar underneath the Donors Choose badge. There's a weird conflict between google translate and google maps which generates an error message, but just ignore it and get your translated blog.
The comments are not translated yet, but I've suggested to Disqus that they might want to figure out how to integrate Google's translation service. We'll see if they do.
Let me know what you think.