BY STEPHANIE EARLS stephanie.earls@gazette.com -Before technology could bring the planet to the people, if you wanted to know - and see and experience - what was happening in the world, you went to the fair. The World's Fair, that is. Since the first "World Expo" in London in 1851, the often months-long expositions have served as global stages for the advancements of the age, in science, manufacturing, exploration, construction.