ORLANDO, Fla. -- Joyce Carlson, a Disney artist who helped create the idyllic universe of singing children at "It's a Small World" rides across the globe, died at home at the age of 84. Carlson died on Wednesday after long suffering from cancer, The Walt Disney Co. said on Friday. In a 56-year career with Disney, Carlson went from delivering paints and brushes to animators to inking films herself, but it was her work on "It's a Small World" that is witnessed by millions of visitors each year. Carlson was among the creators of a miniature prototype of "It's a...