How does it work? Just head over to popsci.com/imagination, launch the viewer window, and hold the cover of the magazine up to your computer's webcam -- you'll see a 3-D landscape dotted with wind turbines pop off the page; by blowing into your computer's microphone, you can even make the turbines spin faster.
Don't have a copy of the magazine? Go buy one! (Or, OK, you can also download and print a PDF from the augmented reality page.) Don't have a webcam? Can't help you there -- but surely you know someone who does.
Why did we do this? Because it's amazing to see -- and we thought our readers would appreciate getting a chance to check it out. Leave a comment below and let me know what you think.
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.