Raise your hand if you're heard about clean coal. Now keep your hand up if you know what the hell it is. Still up? You're better off than I was before I started digging into this.
It's been all over the news, and in countless political speeches, so we know clean coal is popular. It's in the new economic stimulus package to the tune of $2.4 billion. And its first pilot project was canceled last year after costs accelerated out of control, so we know clean coal is expensive. But what else is it, really...?
After the jump, a short primer in comic form.
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.