Geologists Revisit Earth's Great Oxygenation Event: More Like The 'great Redox Evolution'

[Moontanman]

Geologists Revisit Earth's Great Oxygenation Event: More Like the 'Great Redox Evolution'

 

 

ScienceDaily (Aug. 20, 2010) — In "The Sign of the Four" Sherlock Holmes tells Watson he has written a monograph on 140 forms of cigar-, cigarette-, and pipe-tobacco, "with colored plates illustrating the difference in the ash." He finds the ash invaluable for the identification of miscreants who happen to smoke during the commission of a crime.

 

 

http://www.sciencedaily.com/releases/2010/08/100819162641.htm