New flagship smartphones, if they're good, and the just-announced Nokia Lumia 920 looks very good, are 95 percent boring stuff and 5 percent actually interesting stuff. The Lumia 920 has a giant (sigh) screen, fast LTE 4G, a better camera, a screen with an elaborate name full of symbols (PureView ClearBlack+*+ technology!), faster processor, a new version of its OS (the excellent and under-appreciated Windows Phone), all that kinda stuff. But that's expected.
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.