What is the carbon footprint of a cheeseburger. How does it affect the environment ?

What is the carbon footprint of a cheeseburger. How does it affect the environment ?
http://openthefuture.com/cheeseburger_CF.html
#cheeseburger   #cheeseburgerday   #nationalcheeseburgerday  
http://www.vimeo.com/4709524