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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext'>From:</span></b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext'> extropy-chat [mailto:extropy-chat-bounces@lists.extropy.org] <b>On Behalf Of </b>Anders<br><b>…</b></span><br><br><span style='color:windowtext'>>…</span>I think ameliorating nuclear (or asteroid, or supervolcano) winter using greenhouse gas is not totally crazy<span style='color:windowtext'>…</span>. But these issues can be analysed and worked out, and I think they should be checked just in case.<span style='color:windowtext'> </span>-- Dr Anders Sandberg<span style='color:windowtext'><o:p></o:p></span></p><pre><span style='color:windowtext'><o:p> </o:p></span></pre><pre><span style='font-size:14.0pt;font-family:"Calibri",sans-serif;color:windowtext'><o:p> </o:p></span></pre><pre><span style='font-size:14.0pt;font-family:"Calibri",sans-serif;color:windowtext'>Ja, and the models need to be updated. It must be considered good news that nuclear stockpiles have been reduced as much as they have, and anti-ICMB tech has proliferated.<o:p></o:p></span></pre><pre><span style='font-size:14.0pt;font-family:"Calibri",sans-serif;color:windowtext'><o:p> </o:p></span></pre><pre><span style='font-size:14.0pt;font-family:"Calibri",sans-serif;color:windowtext'>Regarding a re-entry body, many of the details are classified (or were back when that actually meant something) so we don’t know for sure. A modern nuke has a fusion core which is detonated by a fission device which is detonated by high explosive arranged in a sphere, which is detonated in a controlled manner by electrical signal simultaneously at multiple locations on the surface of the sphere. The circuitry must work perfectly to cause the sphere to implode symmetrically to cause a fission reaction of near optimal yield to detonate the fusion device. If any link in that chain doesn’t work right, that round is a dud. If the trigger device fails and the RB strikes the ground, no fusion reaction for sure and most likely not much fission.<o:p></o:p></span></pre><pre><span style='font-size:14.0pt;font-family:"Calibri",sans-serif;color:windowtext'><o:p> </o:p></span></pre><pre><span style='font-size:14.0pt;font-family:"Calibri",sans-serif;color:windowtext'>If there are way more of those THAAD missiles and other countermeasures than we know, some and perhaps most of the incoming warheads could be destroyed, leading to survival of millions of Americans.<o:p></o:p></span></pre><pre><span style='font-size:14.0pt;font-family:"Calibri",sans-serif;color:windowtext'><o:p> </o:p></span></pre><pre><span style='font-size:14.0pt;font-family:"Calibri",sans-serif;color:windowtext'>spike<o:p></o:p></span></pre></div></body></html>