Chapter one is 1949 to 1991, when the Soviet Union broke up,第一个时期从1949年到1991年苏联解体and what we were dealing with, at that point and through those years, was a superpowers&#39 nuclear arms race.我们要关注的是在这些年间有一场超级大国之间的核军备竞赛It was characterized by a nation-versus-nation, very fragile standoff.这场核军备竞赛最主要的特

So, a big question that we&#39re facing now and have been for quite a number of years now:我们现在面临一个大问题，这个问题已经持续了很多年：are we at risk of a nuclear attack?我们是否处于遭受核袭击的危险之中呢？Now, there&#39s a bigger question that&#39s probably actually more important than that,现在，有一个更大的问题，这个问题可能比刚刚提到的那个问题更重要is the notion

And what happens is -- this is -- I&#39m going to show you now some fallout plumes.接下来将要发生的－这是－我现在要向大家演示放射性坠尘。Within 20 minutes, it comes straight down.在20分钟内，坠尘直线下落；Within 24 hours, lethal radiation is going out with prevailing winds,24小时内，致命的辐射将随着盛行风飘散and it&#39s mostly in this particular directio

And one of the greatest governmental delusions of all time政府有史以来最大的幻想之一was something that happened in the early days of the Federal Emergency Management Agency, FEMA, as we now know,是由早期的联邦紧急情况管理署（FEMA）提出的and are well aware of their behaviors from Katrina.我们在卡特里娜飓风的时候已经领教过FEMA的本事了Here is their first

And the farther you are away in distance,你距离爆炸点的距离越远越好the longer it is in time from the initial blast距离爆炸的时间越长越好and the more separation between you and the outside atmosphere, the better.尽可能地将自己和外界隔绝开来So separation -- hopefully with dirt or concrete, or being in a basement --所以，与外界隔绝隔绝--最好是用泥土和水泥隔绝，

This was basically an attempt to teach our schoolchildren这个算是尝试着教正在上学的孩子们that if we did get engaged in a nuclear confrontation and atomic war,如果我们真的被卷入一次核冲突或者核战争then we wanted our school children to kind of basically duck and cover.我们希望我们的孩子们迅速躲到桌子下面That was the principle. You -- there would be a nu