Canon's followup to the 5D Mark II, easily one of the most popular DSLRs ever made, is finally here, and it looks like a healthy sequel (and competitor to the recently-announced Nikon D800). The major upgrade in the Mark III is the new autofocus system, but it also gets a sensor overhaul, a new image processor, an SD card slot alongside the typical CF, and an onboard external mic and headphone jack for taking video. Our photo-fanatic sister site PopPhoto has the full story.
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.