Today’s xkcd, titled ‘Money’, is an infographic detailing where (almost) all money is located and allows for many different entities to be compared.
In the few moments that I spent scanning the vast array of information, I was most intrigued to learn that the US Environmental Protection Agency values a single human life at $8.4 million (source: EPA).
The original post is here, while here is a more legible version which you can pan around and zoom in and out of. A copy is also visible below. The amount of information within the image is vast and I warn you that it will take a lot of time to even begin to interpret.
A full list of references is available here.