Turkish pronunciation
hau ôn ırthPronunciation
/ˈhou ˈôn ˈərᴛʜ/ /ˈhaʊ ˈɔːn ˈɜrθ/
Etymology
[ 'hau ] (adverb.) before 12th century. Middle English, from Old English hu; akin to Old High German hwuo how, Old English hwA who; more at WHO.Videos
... For the first four billion years of Earth's history, ...
... seven billion. Over the same interval, the earth has not ...