Name:	GoneFishin -	Reply
Subject:	Fact or Fiction???
Date:	5/13/2019 9:36:22 AM

Never realized they did measurements 800,000 years ago.

"Just how bad is our greenhouse gas problem right now? There's more carbon dioxide in the atmosphere today than at any point since the evolution of humans. That shocking bit of news comes from data from the Mauna Loa Observatory in Hawaii. It says the concentration of CO2 in the atmosphere is over 415 parts per million. That's higher than at any point in the last 800,000 years, since before the evolution of homo sapiens. Elevated carbon dioxide levels prevent the Earth's natural cooling cycle from working, trapping heat near the surface and causing global temperatures to rise."

Name:	MartiniMan -	Reply
Subject:	More like guesstimate
Date:	5/13/2019 10:46:24 AM

Obviously they weren't monitoring CO2 levels 800K years ago.  They use secondary sources to estimate CO2 concentrations which are fraught with all sorts of uncertainty and error.  So all these numbers and statements of "fact" are wildly uncertain.  But more to the point, even if correct what it means is that CO2 seems not to have the same impact on global climates as much as other factors.  As we have seen over the last two decades global temps are relatively stable despite their belief that we are at "record" CO2 levels.  

Name:	lucky67 -	Reply
Subject:	Fact or Fiction???
Date:	5/13/2019 5:59:44 PM

bet 90% is from/caused by libtards in California & emmissions from Al Gores mansion

Name:	MartiniMan -	Reply
Subject:	dT vs CO2 - by proxies over geologic time
Date:	5/14/2019 9:06:09 AM

As shown on this figure, there is scant correlation between CO2 levels and global temps.  But don't let facts get in the way of a good hoax that can be used to justify more gov't control and higher taxes.

Name:	phil -	Reply
Subject:	Fact or Fiction???
Date:	5/14/2019 9:07:11 AM

Or just hot air being generated by politicians