http://www.johndcook.com/blog/
I am not really interested in blogs. This one is okay, but I probably will not go there unless I am instructed to find a blog again. This is a guy from Houston, TX, so I immediately decided he must be a decent human being. He writes about intellectual topics in math, science, creativity, business, computing, etc. I did think his recent post about "How odes the amount of heat an animal produces vary with its size?" could be useful in a high school math course.