The Wall St. Journal has a fascinating article on the hobby of my once (UGA undergrad) and possibly future (GMU grad) student Curtis Melvin: he leads a web-linked do-it-ourselves effort to identify obscure features and fill in the details on Google Earth's map of North Korea. I knew Curtis had visited North Korea as a tourist, which is endearingly wacky, but this borders on the profound. What the effort has uncovered is pretty amazing. Don't fail to click through to the WSJ's interactive sidebars.