Demonstrate the wonders of STEM fields, and do so in a non-hokey manner (I've seen the government ads and the ACM ads, they are terrible).
Instead of bubble-heads on the evening news, work to have thoughtful people providing the voice of the country. Work to have authorities in those fields providing discussion and commentary.
Work to raise the national mind past football, movies and booze and towards deeper understanding and discussion of real issues.
I believe that with an increase in the average thought level, we will suddenly find more geeks in our midst.