Board Thread:General Discussion/@comment-26146976-20150310010320/@comment-25203403-20150310012315

30 years before 2012, Stan Pines died. In 2012, his brother used a time portal to bring him back.

Also, just saying, why didn't Mabel press the button? After all, people didn't know that the Mayans were wrong about the end of the world back then.