Extraterrestrial Spinels
Meteorite Minerals Hint at Earth Extinctions, Climate
Change by Jeremy Hsu, Astrobiology Magazine
http://www.astrobio.net/exclusive/5678/meteorite-minerals-hint-at-earth-extinctions-climate-change
Meteorite minerals offer clues to Earth extinctions,
climate change by Jeremy Hsu Space.com, NBC News
http://www.nbcnews.com/science/meteorite-minerals-offer-clues-earth-extinctions-climate-change-8C11167396
Yours,
Paul H.
