Quote:
Even scientist cannot agree what is causing the global warming.
This is a vast misrepresentation of the current scientific thinking and of the scientific process in general.
To recap global warming:
1) The earth is warming
2) The warming is now at or higher than the temperatures that during the last interglacial period
3) The rate of change of the temperature indicates that we are in a "abrupt event"
4) The rate of change that we are seeing requires human-induced variability combined with natural variability
5) Fossil records indicate that we are quickly entering a climate similar to the run present during the Cretaceous.
To recap science:
There is no monolithic "science". The very nature of science is that as theories evolve and are tested, the scientific consensus will change.
The more data that has been collected, the less change there will be over time.
There are always some number of scientists who are behind the curve and some that are ahead.
So you will always be able to find some guy claiming that global warming isn't happening. Or that global warming is caused by some bizarre phenomena that no one else has thought of. While this makes for interesting reading, the correct approach is to examine the consensus as a whole.
It should be noted that sometimes, very rarely, there is a maverick scientist who is, in fact, correct. The last case that I am aware of was an Australian scientist who correctly surmised that stomach ulcers were pathogenic in nature. I'm sure that there has been a later one.
To recap the situation that we are in:
You may be curious about the affects of the last glaciation. Afterall, how bad could it possibly be? So we lose some fish, and we get reefs off of Catalina.
Well, North America (the breadbasket of the world, and where I live) was covered by an ice sheet 6,000 feet thick. So, all the descendants of all the people living in NA will either migrate south or die. If you or your geographical area depend on food grown in NA, well, good luck.
Notice that the Cretaceous was about 65 million years ago. Humans didn't exist back then. We were not designed to survive in that environment. Hopefully we'll learn to manage.
So we really are considering some serious things here. The last time humans were in this situation, we didn't do so well. See the "World Population" link below.
Peter
Documentation for the above post:
Global Warming recap:
http://einstein.uab.es/vrull/monographic/gwcauses_paleoclim.htm
Science recap:
http://www.physics.brocku.ca/etc/cargo_cult_science.html
Situation recap:
Ice sheet thickness and glaciation effects
http://www.ontarioarchaeology.on.ca/oas/summary/post.htm
World Population (look under "Invention of Agriculture")
http://fire.biol.wwu.edu/trent/alles/World_Population.pdf