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Hi Ving, and others.
While I agree there might be a natural cycle of temperature changes, this is not really the issue, if it was natural it would occur over thousands of years as has been experienced in the past, not 10s of years as we are seeing today. As I said before in Switzerland and other countries around the world Glaciers were growing, and quite a rate, in Zermatt one was even threatening the local village. Now it is no where to be seen, the temp changes simply dont occur so quickly naturally. It is too coincidental that it changed shortly after major industrialisation of Europe. Now globally all glaciars are retreating, lakes and rivers are drying up, the climate is changing at a rapid rate. You may say its coincidental, I dont, I see every day the crap comming out of cars, busses, trains, factories, power stations, chemical plants, steel works, none of this is natural (or good for us), none of it has needed to be handled by the environment in the past and it has all occured at the same time a major climate change. Seems logical that its part of the problem to me.
However to keep things on Astro related topics....And this is not to give an alternative to man made climate change...
I recall reading in an Arthur C Clark book about rapid climate change, caused by the solar system passing through a thin particle cloud (space dust) which absorbed some of the light / radiation and caused the rapid cooling of the Earth, sending it into a massive ice age in just a few years. Anyone ever read this, or care to comment on the possibility? Seems to me this might be a bigger problem than Asteroids, and there is nothing we can do about it....
Cheers
M
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