A well-known proverb states that “Walls have ears”, meaning, eavesdropping can occur when you least expect it. But how many times have you found yourself wondering about the stories different object could tell us, if they could only talk? Take, for example, this red fire hydrant. I recently became aware of this cool startup that enables water pipes to listen to themselves, analyze the sounds retrospectively and figure out useful things. Take a look at this hydrant: it’s red, neat, and does nothing to indicate what is going on beneath the surface of the sidewalk, for example - a leak! A leak from water pipes is problematic to say the least, but it some areas of the globe it can be dangerous and extremely costly. A startup called aquarius-spectrum has invented the technology to allow any pipe outlet to literally listen inside, and the results can be very surprising! This technology is so sensitive that it can distinguish between minor water leakages along pipes embedded dee