Columbus and Magellan had it rough. Exploration these days is quite literally an armchair activity, as high-resolution satellite images and tools like Google Earth make it possible for anyone with an Internet connection to pore over the globe with a fine-toothed comb. There are entire online communities devoted to finding and cataloging the most unusual locales worldwide, creating 21st century atlases of minutiae. It isn't just for hobbyists, either — Google Earth has helped scientists find previously unknown ruins and police locate clandestine marijuana fields. Here are 10 of the most unusual discoveries.
— By Dan Fletcher
This blood-red lake outside Iraq's Sadr City garnered a fair share of macabre speculation when it was noticed in 2007. One tipster told the tech blog Boing Boing that he was "told by a friend" that slaughterhouses in Iraq sometimes dump blood into canals. No one has offered an official explanation, but it's more likely that the color comes from sewage, pollution or a water-treatment process.
