[AdmSmith]

Nice graphs and info in the comments section https://wattsupwiththat.com/2017/06/30/life-on-earth-was-nearly-doomed-by-too-little-co2/

especially in the first one linking to this https://wattsupwiththat.com/2012/12/07/a-brief-history-of-atmospheric-carbon-dioxide-record-breaking/

[Ernest_at_the_Beach]

Thanks for the note.

[Ernest_at_the_Beach]

Looking thru the comments,....they got some good discussions going on and some considerable disagreements.