article: Gigasecond
links: Jesus Christ Half-life (element) Stonehenge Rome Gutenberg Bible Jericho Methuselah Terasecond Pompeii Zhou Dynasty New World King James Bible Holocene Homo neanderthalensis Socrates Alexander the Great Book of Genesis 1 E9 s Iron Age Pleistocene Parthenon China Taj Mahal Dionysius Exiguus Greek Dark Ages Christopher Columbus Radiocarbon dating