Quote:
Originally Posted by The Yen Man
What I don't really get is how you can possibly take the last 100, or even the last 1,000 years and use it as a trend. I mean, the earth is what, about 4.5 billion years old. So in order to even have a trending period that can give a signficant trend, you need at least 0.05% (and that's being really generous). So 0.05% of 4.5 billion is 2.25 million years.
Is there evidence that the Earth has been steadily warming up for the last 2.25 million years? If not, how can people even claim global warming is a trend?
|
In the past 2.25 million years, there have been several warming and cooling periods. From geological,fossil, and glacial evidence, we can typically know the rates of warming in cooling.
In the past few hundred years (basically since the industrial revolution), we have seen global changes in climate that do not compare to others in history (barring a cataclysmic event; such as meteor impact or simultaneous massive volcanic explosions).