https://blog.speculist.com/global_warming/instant-climate.html Live to see it. Thu, 16 Dec 2021 08:21:00 +0000 hourly 1 http://wordpress.org/?v=3.6.1 https://blog.speculist.com/global_warming/instant-climate.html#comment-2399 Karl Hallowell Fri, 13 Apr 2007 09:31:56 +0000 http://localhost/specblog/?p=1135#comment-2399 I wonder what the delivery costs of these methods are. I did a cursory calculation. $10 per kg seems to be the price to beat. That means $10 billion or so (presumably each year) just to put it up there. 747-400 ought to be considerably cheaper (at $1 per kg or even less), but it barely made the altitude. Apparently 10-40 km is the desired range, but the 747′s ceiling is at 13 km or so.

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