Robot finds mysterious spheres in ancient temple

By Rossella Lorenzi, Discovery.comHundreds of mysterious spheres lie beneath the Temple of the Feathered Serpent, an ancient six-level step pyramid just 30 miles from Mexico City.The enigmatic spheres were found during an archaeological dig using a camera-equipped robot at one of the most important buildings in the pre-Hispanic city of Teotihuacan."They look like yellow spheres, but we do not...