I am a scientist and global climate change is something I deal with daily in my management. I work for the state gov and we are not even allowed to say global warming. One thing I think many scientists need to remember is that the theory of global warming due to man's introduction of CO2 is just that, "theory." There is no way for a scientist to test the hypothesis since there are just too many variables in our atmosphere.
I tell myself all the time that it doesn't matter why, it does matter how we respond though. There could be hundreds of conspiring forces causing a shift in climate conditions. People need to understand that it might be a natural process but it is occurring and it does require a certain level of response.
First, we need to curtail our building in the flood plain and in coastal communities. Sea level is rising, around 2" already in some areas on the East coast. Saltwater intrusion into public aquifers and municipal water sources is a real problem in several communities that I know of personally.
Second, is habitat loss, many environmental problems get compounded when the habitat needed for rebound is not available. This will certainly lead to species loss (we are currently in a period of species die off comparable to the dinosaurs). Most people only think of animals when they think of endangered species but one out of every 8 plant species is at least threatened.
Third, Climate change is going to cause habitat shifts. This will also redistribute the home ranges of many species. Imagine the new bread basket being located in Canada, or the citrus growers relocating to the midwest.
Lastly, is the increased frequency and severity of tropical storms and severe weather. No need to explain how this might affect us.
So, remember, there is no use in arguing the "why" but we can help mitigate much damage by simply acting now proactively.
and just in case, I drive a fuel efficient vehicle, I recycle, use my HVAC less in the summer, use my heat pump less in the winter, turn lights out, carpool when I can, buy curly cue lights, walk or ride my bike if I can, support alternative energy, and generally hug the hell out of some trees
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