I ran your site through the validator at w3c.org and got a few errors, two of which were your meta title and description tags not being closed. Whether or not that makes a difference is beyond my knowledge, but I find that nice clean code, proper heading tag usage (which the default themes of WP unfortunately do not automatically do), and interesting, topical content (like you have) help immensely with SEO.
After you fix all the errors, you might try Google's keyword tool to find out popular keyword phrases for your niche - I'm sure there are a lot of them for your particular topic.
This is not really the forum for that though, this forum is more for style than substance of a site. Like I said, clean up those errors and fix your heading tags. Then you've made a good step.