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| Authored by: Anonymous on Sunday, November 25 2012 @ 01:19 PM EST |
Ah, but David Roberts has privileged Whole Earth figures from an orbiting
observatory covering the entire post-Cambrian era.
C'mon, give him a break. He said he was doing it to settle a brag on
Twitter. Yes that bit has been edited off the movie shown at the link.
His task was to simplify the topic into a fifteen minute talk. He did
this by stripping away all the margins of error, all the postulations
of alternate theories, any discussion of cooling vs. warming.
I found the music soundtrack annoying, and the interspersed
newsclips unattributed, thus uninforming. PJ is a good teacher.
I Googled "David Roberts" + TED to find the original.
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| Authored by: Anonymous on Monday, November 26 2012 @ 04:55 AM EST |
In fact, about 8,000 years ago during the Holocene Climatic Optimum,
the Northern Hemisphere was something like two to three degrees warmer than
today!
The so called "Holocene Climatic Optimum" was a
regional effect. Certain parts of the northern latitudes were warmer (and some
were colder), but most of the earth saw changes of less than 1 degree in
temperature. Some estimates put the overall global climate as slightly colder.
Believe it or not, but there is an "earth" outside of the US.
If you
want to talk about stable global averages in areas where most people live, then
his statement is probably quite reasonable.
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