CREATE TABLE table_63546 ("Children of Earth" TEXT, "Run time" TEXT, "Writer" TEXT, "Director" TEXT, "Original airdate" TEXT, "Viewers  ( including HD )  in millions" TEXT)

Who was the director of the episode written by Russell T Davies and James Moran?
SELECT "Director" FROM table_63546 WHERE "Writer" = 'russell t davies and james moran'
SELECT "Director" FROM "table_63546" WHERE "Writer" = 'russell t davies and james moran'