1972 kii, Francis Perrin oo ah fiisikis Faransiis ah ayaa helay shan iyo toban qalab oo dabiici ah oo dabiici ah oo dabiici ah oo aan firfircooneyn oo ku yaal saddex meelood oo kala duwan oo macdan ah oo ku yaal macdanta Oklo ee Gabon, Galbeedka Afrika, oo si wada jir ah loogu yaqaan Oklo Fossil Reactors.
1.7 bilyan oo sano jir