N.B.: As all dates except the first are +/- 2.3 billion years, the author strongly advises against using this chronology for purposes of exegesis or the calibration of carbon-14 dating.
Inspiration for this column was a remark made at a meeting of the American Geophysical Union Inst spring by the late Cesare Emilinni, a renowned geochemist. Russell Seitz works on issues related to the proliferation of weapons of mass destruction at the John M. Olin Institute for Strategic Studies at Harvard University.