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timtyler comments on You're Entitled to Arguments, But Not (That Particular) Proof - Less Wrong
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Sure - and there's also black carbon:
http://www.time.com/time/health/article/0,8599,1938379,00.html
...and planting trees in the north:
http://www.scientificamerican.com/article.cfm?id=tropical-forests-cool-earth
Hopefully in due course we will have fusion and mirrors in space on our side as well.
I don't think anyone knows if a concerted effort could prevent reglaciation, though. If anyone wants to make the case that we should downplay the risk of reglaciation because we could avert it, I would say: prove it. This looks potentially extremely dangerous to the planet to me: show me that it is not.
Until we are much more confident in our climate control abilities, I think a safe distance is prudent. IMO, that involves at least melting Greenland.
The planet? The planet is used to glaciers. It's the humans who may not like them.
I mostly mean the planet's lifeforms. Few living things like ice crystals. They typically rupture cell walls - causing rapid death.
You make a valid point, but you neglect to mention that the same temperature/pressure regimes that generate ice crystals also make metals (especially scrap metal alloys) very brittle and prone to cracking, not to mention long-term effects on malleability.
Kind of a big thing to leave off!
You have a point there. If you want to build something out of metal and not have it break - and there are lots of important things that can be made out of metal - a cold environment makes it harder.