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The Origins of Glaciers
If we wanted to turn the temperature of the earth down one degree centigrade, we can probably do that by just putting a little aerosol particles into the upper atmosphere. Whether that's a good idea is a whole different story because once you do that, you cool down the whole earth by thedegree centigrade. Let's say you don't get to make choices about, oh, well, actually, we just wanted hotter here and colder there and so on. And it kind of has to be this big collective decision to, to do that, which is a difficult thing to decide to go for.