This is a great blog for teachers and students; it utilizes current events and articles from The New York Times, and even provides lesson plans as well.
This search engine is very interesting! When it was first introduced to me by a co-worker, I spent a while just exploring. It can connect information tied to a single topic or concept for you; it can be a puzzle to see what the engine collects and try to figure out why it picked that information! For lesson plan ideas for different Math levels, Check out this link: http://www.wolframalpha.com/educators/lessonplans.html