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.
- http://www.ans.org/pi/np/oklo/

Fission Reactors on the Earth
- Discusses the natural nuclear fission reactions that occurred 1.7 billion years ago in uranium deposits at Oklo, Gabon.
- http://www.npp.hu/tortenelem/foldreaktor-e.htm

Report of a Birding Trip to Gabon
- Report of a birding trip to Iguela in southern Gabon in June, 2000.
- http://www.worldtwitch.com/gabon_cassidy.htm