Our good friends over at Sound + Vision just posted a great little explainer on crossovers, "the part of a loudspeaker that people least understand." (They're kind of like filters that send different parts of the input audio to different parts of the speaker.) It's a great way to actually figure out what's going on inside your boom-cubes (the preferred audiophile term for speakers, we assume). Read more over at S+V.
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.