We don't consciously post things here trying to comply with the vision. Historically, communities evolve independently of the vision their founders had when seeding them.
So, you can't complain why there are less science related posts. It is just the way because the community does not find science interesting. (By the way, I personally love science). You can try seeding the community with science related posts and see how we respond.
That's my point with posting this here. I don't want to complain, but I want to make the correct people aware of this (if they weren't already). What I think is: 1) interesting enough science articles go to the front page when they are posted on the news queue, 2) there are people interested in science here, maybe they'll care to start posting science related links again? I don't know, it's just an idea.
Not directly pertinent to your original question, but since you're interested in science articles, I'd recommend tracking the Ars Technica "Nobel Intent" science news feed:
http://arstechnica.com/journals/science.ars/
So, you can't complain why there are less science related posts. It is just the way because the community does not find science interesting. (By the way, I personally love science). You can try seeding the community with science related posts and see how we respond.