Contributed by Michael N. Chernoff, BSc. Geological Engineering © May 31, 2021
96 percent of the earth’s species were extinguished at the close of the Permian period (252 million years … Continue reading
Tag: geology
By William D. Balgord
Reprinted with permission Richmond (VA) Times-Dispatch
The Union of Concerned Scientists, a not-for-profit advocacy group based in Cambridge, Mass., recently issued a report that drew immediate
… Continue reading 