At the Bottom of the Sea, Glass Spheres Prepare to Hunt for Mysterious Neutrinos

A year ago, Bertrand Vallage took a submarine to the bottom of the French Mediterranean to fix instruments his team had installed there for a physics experiment. Some cables had fallen loose from their connections, and Vallage and his submarine crew were there to plug them back in so the experiment could get back to work detecting tiny particles called neutrinos. In principle, they could reconnect each cable in five minutes using two clumsy metal arms connected to the submarine. But as they maneuvered the joysticks that controlled the arms, they kept dropping the cables, kicking up dust from the seabed. Each time, they had to bring the cable inside the submarine and clean it, over and over again.