I heart maths

Not sure they covered this in math class when I was in school. If they had, it wouldn't have mattered since I probably wasn't paying attention anyway.

http://judson.blogs.nytimes.com/2009/05/19/math-and-the-city/?em

Brief quote:

The same pattern holds for other measures of infrastructure. Whether you measure miles of roadway or length of electrical cables, you find that all of these also decrease, per person, as city size increases. And all show an exponent between 0.7 and 0.9.

Now comes the spooky part. The same law is true for living things. That is, if you mentally replace cities by organisms and city size by body weight, the mathematical pattern remains the same.