Correction: "PPM" has remained remarkably stable.
On Wed, Oct 23, 2024 at 6:25 PM Richard Menec <[email protected]> wrote: > Thanks Barry. It puts the lie to the notion that temperatures have > fluctuated wildly over the millennials. > Even including the ice age 600-700 thousand years ago, temperatures have > remained remarkably stable. > Except, of course, for the last few hundred years. > r > > On Wed, Oct 23, 2024 at 5:43 PM Barry Brooks via groups.io <durable= > [email protected]> wrote: > >> Yes, climate change is natural, but we didn't have to speed it along with >> unlimited consumption growth. Notice that this graph showing historic >> global temperature is not breaking news, and for good reason. If people >> knew how hot it got many times in earth's history, and that we are headed >> back to that, we would be even crazier than we are. How long can we >> continue to hide the truth to avoid accepting that social mortality is >> unavoidable in any case, like personal mortality? >> >> Our current 60° global temperature is cold compared to the historical >> record. In the last 500 million years the global temperature was near 90° >> about 20% of the time. >> >> This 500 million year temperature graph shows that the earth can get much >> hotter without our help. Also, the highest CO2 concentration in the last >> 500 million years was 300 ppm. Now, we have driven the CO2 concentration to >> over 400 ppm, which will soon finish melting the poles and send earth back >> to the old hot house earth, stuck on hot for millions of years without ice >> to reflect the heat. >> >> A few humans might be able to survive the 90° plus world we are headed >> for, for a while. Anyway, there are 10^ⁿ other earth-like planets where >> isolated intelligent life can exist briefly, briefly in that planet's >> geologic time. Planets die, but life goes on. >> >> Note how the temperature jumped from 53 to 60, making a vertical line for >> today on the graph, a record rate of rise. >> >> >> >> >> >> -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#33127): https://groups.io/g/marxmail/message/33127 Mute This Topic: https://groups.io/mt/109180960/21656 -=-=- POSTING RULES & NOTES #1 YOU MUST clip all extraneous text when replying to a message. #2 This mail-list, like most, is publicly & permanently archived. #3 Subscribe and post under an alias if #2 is a concern. #4 Do not exceed five posts a day. -=-=- Group Owner: [email protected] Unsubscribe: https://groups.io/g/marxmail/leave/13617172/21656/1316126222/xyzzy [[email protected]] -=-=-=-=-=-=-=-=-=-=-=-
