Join us today on Facebook for a chat with Annalee Newitz, editor-in-chief of io9.com and author of "Scatter, Adapt, and Remember: How Humans Will Survive a Mass Extinction." [UPDATE: Thanks to everyone who participated! To check out the chat, go here.]
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.