Today in Cupertino, Apple announced the newest version of its bajillion-selling iPhone, to be named the iPhone 4S. Like the iPhone 3GS, this is a small, mostly internal upgrade over its predecessor--a new dual-core processor here, an improved camera there--though there is a major addition in the form of Siri, a voice-command service Apple bought awhile back that allows you to ask your phone questions, or tell it to do things, in natural language. Lots of things.
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.