Post headlines + page titles

Two questions:

1. An unclosed tag started showing up in my post headlines and titles today.

http://patiastephens.com/wordpress/

See the numeral and end bracket at the end of each headline? I can't figure out where that's coming from. Any ideas?

2. Currently, my post headlines are in H2 on the main page, but turn into H1 on post pages. How can I make them remain in H2?

Thanks.