How do I change the name that appears in the browser tab?

I'm using Kathmandu Pro and I'd like the front page home page to just display the name of my site or the name of site + home in the web browser tab. Currently it displays like this "news-blue sky diesel exhaust fluid". I also have a news page so this is very confusing to my visitors. I've looked through all of the settings on WP and cannot find where to change this. www.blueskydefna.com Many thanks in advance for your help! Karen