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Posted on: November 25, 2019 at 16:52:14 CT

Ferg MU

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M.O.B. Votes:

Concentrations of CO2 in the atmosphere were as high as 4,000 parts per million by mass (ppm) during the Cambrian period about 500 million years ago to as low as 180 ppm during the Quaternary glaciation of the last two million years.

The level you stated was the highest in human history.

Please explain why this message is being reported.

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MESSAGE THREAD

Carbon dioxide levels in the atmosphere have reached record - Ace AU - 11/25 16:44:31

Cool doing all i can do to help(nm) - TigerFan92 MU - 11/25 22:33:25

Natural consequences of a 7x increase in population - tigerinhogtown STL - 11/25 22:17:39

Excellent news(nm) - DollarSigns MU - 11/25 17:15:48

George posted this in June - Spanky KU - 11/25 17:01:18

the report published today, Spankee - Ace AU - 11/25 17:05:46

Published in June...the OP ‘study’ is derivative - Spanky KU - 11/25 17:09:29

Stop breathing...every little bit helps. - Logan BAMA - 11/25 16:53:21

No - Ferg STL - 11/25 16:52:14

Well duh - Ace AU - 11/25 16:58:11

shut off your PC and stop using electricity - TGR84 MU - 11/25 16:51:12

Ozone Hole would be a great Tigerboard handle(nm) - Fred G. Sanford USA - 11/25 16:46:28