Sidebar and footer disappear in comments

Hello everyone, Im sure somebody somewhere has had this problem before. So I was curious if anyone could give me any pointers/tips/hints on how to solve it.

My problem is that my sidebar and footer disappear off of the page when I read and post new comments. If you follow the link to my blog and try to read/post comments or individual posts, you will see what I mean.

https://www.productofchaos.com/content/wordpress/?page_id=14

Also if anyone knows how to prevent the title from appearing twice in my browser, that information would be appreciated as well. The word “News” appears twice in the title of my browser, Im not sure what I did wrong there. Im sure its an easy fix, but Im new at this so I havent figured out all the odds and ends yet.

Any information would be appreciated, thank you.