Let's for argument sake say there is Global Warming.
How can you really say what the cause is?
Millions of years ago, we had global freezing on this planet, then global warming, then global freezing, then global etc. etc. etc.
How do you know this isn't just part of the earth's normal cycle?
Cave men and dinosaurs might not have figured it out back in the day?
DVINNY --
I would respond that the causality is not based on a 'single' reason, but actually a confluence of factors. Many of those factors are intermingled to the point that you cannot pinpoint 'cause and effect'.
I would point out that the so-called greenhouse gas emissions
ARE a factor in global warming. However, I don't believe anyone can provide % attribution for greenhouse gases effect on global warming - much less implicate man-made influences lest we forget that there are plenty of natural events that can generate large quantities of greenhouse gases (
e.g. volcanic activity).
IMHO a rationale, measured approach to better understand how
ALL of the factors influence global warming is warranted. The major problem that arises is that the available information gets twisted through propaganda to the point that it is difficult ot make heads or tails of the information. There are persuasive arguments that support or reject the notion that the accumulation of greenhouse gases is having an adverse effect on the global environment - manifesting itself in devastating weather patterns, retracting glaciers, rising sea level, famine, declining animal populations, etc.
In the final analysis, it really doesn't matter why you believe global warming is leading to disaterous results -- the results are documented. What is needed is some perspective and some real risk analysis. Look at the data - keep it in context. Look at contributors to greenhouse gases like power plants and automobiles and determine if one can justify the increased costs for emissions controls on vehicles and power plants. There are some increased risks that are considered 'acceptable' because it is not practical or cost effective to reduce the risk to standard risk levels (
e.g. groundwater drinking criteria for Arsenic - a known toxicant, carcinogen).
The last thought on my not-so-mini-rant is that most people talk up the thought that we need to reduce emissions and go after sources like power plants. Those sources are in place and growing because of the demand that society and the lifestyle of comforts demands. My supervisor puts the situation in a simpler perspective - when it comes down to it, do you want a jab in the eye or a stab in the arm - those are the choices you have for reducing greenhouse gases.
'.02'
JR