America 500? What the U.S. Will Look Like in Another 250 Years

Source: CBS News - U.S. NewsJust four years after he signed the Declaration of Independence—but before the colonies would win the war that granted their freedom—Benjamin Franklin was already thinking about the future. Franklin wrote a letter in 1780 to his close friend Joseph Priestley, the scientist who discovered oxygen, lamenting being born at the beginning of the scientific revolution. He dreamed not just of what the U.S. and world would look like in 250 years but...