Nikon's followup to the D3s, the D4, has recently taken the reins as Nikon's current big boy--the absolute top-of-the-line, crazy-powerful beast of a camera, competing with the Canon 1D. Our buddies over at Pop Photo just posted their full-on hardcore camera test of the D4, thoroughly examining its image quality and usability under all sorts of conditions to see if it's worth the title of Nikon's finest--and the $6,000 price tag. Check it out 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.