The funny thing is that the truly mainstream publications (e.g. NYT, Time, CNN, etc.) no longer have such a high bar about what's interesting or meaningful to the world. Rather, they're already down on their knees losing impressions to Facebook and Twitter and the only thing they care about is "what has the potential to be forwarded like crazy on social media and generate impressions".
Time magazine decided on their own to feature one of my personal little embarrassingly-simple late night Arduino hacks, and my guess is only because I made a Youtube video out of it, and that it had good potential for a witty headline that could go viral on social media with its connection to something from popular literature that everyone knows. There was absolutely zero innovation in it as far as technology goes.
Tech publications, on the other hand, tend to have a higher bar in terms of content quality and meaning to society and the world, but mainstream, non-tech consumers don't read them.
Moral of the story is, if you want to get featured on the mainstream publications, make it catchy, witty, funny, fashionable, potentially viral on its own. Oh, and use technology to realize something well-known from fantasy, science fiction, or popular movies and you'll have an instant hit on mainstream media.