The earth has had many climatic cycles in the past. A thousand years ago, Greenland was green and the Vikings called the northeast coast of North America Vinland because there were grapevines growing there. The 1400s saw global cooling. 10000 years ago there was an ice age. During the age of the dinosaurs, it was apparently a lot hotter than it is now. The earth's surface cooled significantly in the years after the eruption of Krakatoa in the late 19th century. Maybe the only thing new here is that now we have a convenient scapegoat on which to pin the blame.

Bert, citing local environmental damage, which is very real, does not prove global catastrophe.

Mousethief, I think what Gnu was trying to say is that we don't have any pre-global-warming-scare satellite photos to compare to, so we simply don't know that the hole in the ozone hasn't been there for thousands of years.

Mooman, are you intellectually honest enough to admit that there are many leading scientists who do not agree that there is concrete evidence in the first place, and that there are others who say there may be warming but it probably isn't caused by greenhouse gasses but rather solar activity?

Read the article, folks. Try to consider what it says about the global cooling scare of just a quarter century ago. Put it all in perspective with the earth throughout the ages. Research both sides of the argument, not just the one that fits your political leanings.