American Nuclear Society - Oklo: Information about the nuclear fission reaction which started in an underground uranium deposit in Oklo, Gabon more than 1.5 billion years ago.
Fission Reactors on the Earth: Discusses the natural nuclear fission reactions that occurred 1.7 billion years ago in uranium deposits at Oklo, Gabon.
Report of a Birding Trip to Gabon: Report of a birding trip to Iguela in southern Gabon in June, 2000.