Detail  population clock 人口時計; ポピュレーションクロック   jinkō tokei; popyurēshon kurokku Bevölkerungsuhr Links U.S. Population Clock http://www.census.gov/population/www/popclockus.html World Population Clock http://www.census.gov/ipc/www/popclockworld.html World population clock (real-time) http://www.tranquileye.com/clock/