Users normally get all the articles in an RSS feed, whether they want them or not. Trap!t, though, lets you rate your interest in every story. The more ratings, the more finely honed the feed becomes, until it takes only a single cup of coffee to finish off a well-curated selection of articles.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.