Japan's emperor to step down in 200-year first

For the first time in more than 200 years, Japan's emperor will abdicate Tuesday, putting his son on the Chrysanthemum Throne and ushering in a new era for the world's oldest monarchy.In a set of solemn ceremonies, Emperor Akihito will hand over to his eldest son, 59-year-old Crown Prince Naruhito, also kicking off the new imperial "Reiwa" era -- meaning "beautiful harmony" -- that will continue for the length of the new monarch's reign.At precisely 5:00 pm local time (0800 GMT), the 85-year-old