Spain

(Source: cnet.com)   When you think of drones, you probably think of robot vehicles soaring high over our heads. But there are plenty of hard-to-reach places that aren't out in the open where drones can give you eyes and ears -- and one example is the underground water tanks of Barcelona, Spain, where drones are being sent in to patrol the pipes. The company behind the … [Read more...] about Drones Are Patrolling Barcelona’s Sewers