The north magnetic pole is slowly sliding from its current locale in the far north of Canada toward Russia at a rate of something like 40 miles per year, but most of us don’t feel the repercussions of that. However, far from the frosty Canadian tundra, sunny Tampa, Fla., is feeling the magnetic shift. Tampa International Airport has closed its primary runway until January 13 to repaint the numeric designators and taxiway signage to reflect the change.
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.