Culture
Actually Worthwhile Advertising: a Water-Producing Billboard
The high-tech billboard transforms atmospheric moisture into drinking water for thirsty Peruvians.
Lima is the second-largest city in the world to be situated in a desert, right behind sand-blasted Cairo. That means the Peruvian capital's 7.6 million residents have a great and persistent thirst for clean water, which certainly isn't being fed by the 1.1 inches of rain Lima received during an average year.