Here's an infographic of some interest:
If that embedded version doesn't work for you here's the big-huge version that is very readable but also big. And huge.
More like this
This is actually pretty much the most useful and accurate infographic I've ever seen in my en
I dont know about you all, but I love those infographic things people create. They make statistics a lot more understandable and relatable than a chart of black-and-white numbers. Here is a cool one that turns devastating diseases into really pretty graphics ;)
It's not that funny.
A SETI Infographic « Microcosmologist
Also kind of fun:
http://www.symbols.com/