A team of Canadian and Cuban researchers have discovered the remains of what may be a 6,000-year-old city submerged in deep ocean waters off the western coast of Cuba. Using sophisticated sonar and videotape equipment, offshore engineer Paulina Zelitsky, her husband, Paul Weinzweig, and her son, Ernesto Tapanes, have found megaliths "of a kind you'd find at Stonehenge or Easter Island," Mr. Weinzweig said in an interview yesterday. "Some structures within the complex may be as long as 400 metres wide and as high as 40 metres," he said. "Some are sitting on top of each other. They show very ...