The 2-Billion-Year-Old Natural Fission Reactors in Gabon, Western Africahttp://blogs.scientificamerican.com/guest-blog/2011/07/13/natures-nuclear-reactors-the-2-billion-year-old-natural-fission-reactors-in-gabon-western-africa/ by three14 • 14 years ago 5 0 14 years agoBLblogs.scientificamerican.com