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Walt
United States
Orange County
California
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In memorium. Bob Hoover died 25 Oct 2016 at 94. In WWII he was shot down in a Spitfire and stole an FW-190 to escape. He spent decades at air shows flying Ole Yeller, shown
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Title adapted from tooltip. Original at: http://xkcd.com/1732/

(I was mostly curious how the BGG forums would react to an image this size. It's also a nice concise history of the world, though not comprehensive, of course. I didn't know or hadn't recalled the Jiahu or the Sea Peoples.)

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Chengkai Yang
United States
Cupertino
California
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Out of curiosity what is the current mean temp? I thought it was ~18C or so back during the Dino days which was supposed to be warmer than present.
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Steve Cates
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Visalia
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Here's the changes in average global temperature (blue line) with the CO2 ppm (black line) to see the effects.
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Walking on eggshells is not my style
United States
North Pole
Alaska
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I'm pretty sure that calibrating CO2 monitors was not perfected until the late Bronze Age.
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Walt
United States
Orange County
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In memorium. Bob Hoover died 25 Oct 2016 at 94. In WWII he was shot down in a Spitfire and stole an FW-190 to escape. He spent decades at air shows flying Ole Yeller, shown
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Koldfoot wrote:
I'm pretty sure that calibrating CO2 monitors was not perfected until the late Bronze Age.

Atmosphere captured in glaciers (and maybe amber?) plus plants react to CO2 concentrations, so tree rings etc. are an indication.
 
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Madison
Wisconsin
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Tall_Walt wrote:
Koldfoot wrote:
I'm pretty sure that calibrating CO2 monitors was not perfected until the late Bronze Age.

Atmosphere captured in glaciers (and maybe amber?) plus plants react to CO2 concentrations, so tree rings etc. are an indication.


Good Harry Jeebus, Walt. What the fuck are you thinking?

Or are you laying a meathead trap?
 
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Josh
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Pennsylvania
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Your Chart's Faulty Walt, we all know the world is only 6,000 yrs old. Duh.
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Mac Mcleod
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houston
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"Last North American Pokemon Extinct"

hehehehe.
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