Safety Security Cycling
global warming: Is it not true that the earth has always gone through cycles of warming and cooling?
Studies of climate show cycles of warming and cooling long before industry and machines could have had any possible effect. As one scientist put it, effects of industry could have no more than .01 degree (one hundredth) rise in temperature.
Also, for the past 10,000 or so years, earth has had a relatively stable climate, even with the "little ice age" of medieval times. Before then, the climate showed instabilities beyond anything we have experienced or imagined. There is the possibility, even probability, that these times could return, with hurricanes of 400mph winds and as large as a hemisphere, with flash freezes that occur in minutes bringing
-100 degree temperatures. Man does not know or understand everything about our climate. We are lulled into a sense of security and safety with the stable climate of today. Read and study climatology. Don't just go by what politicians and the news networks say; they don't take the time or effort to do their homework and be objective.
Of course it has. Do you think climate scientists haven't considered this rudimentary fact??
So what's your argument here? Global warming has happened in the past so we can't be causing it? By that logic, because forest fires happened before humans were around, we can't cause forest fires. Then how do you explain Smokey the Bear?
Nailed.
Seriously, you have to do a lot more research than just 'climate has changed in the past'. Do you know what caused the previous climate changes? They were started by variations in the Earth's orbital cycle and solar irradiance, and amplified by feedbacks such as CO2.
Okay, so the next question is can these factors explain the rapid warming over the past 100 or 30 years? The answer is an obvious 'no'. Solar irradiance has remained unchaged on average over the past 30 years as the planet has warmed 0.5°C, and we're in a stable long-term cooling portion of the Earth's orbital cycles.
http://news.bbc.co.uk/2/hi/uk_news/6290228.stm
http://answers.yahoo.com/question/index;_ylt=ApEBLKJvWYrBej5B0u.usM0Fxgt.;_ylv=3?qid=20080124124728AAqNR8n
http://en.wikipedia.org/wiki/Milankovitch_cycle#The_future
http://www.sciencemag.org/cgi/content/abstract/207/4434/943
As you can see, scientists have considered that climate has changed in the past, and they've considered A LOT more information than that. The scientists have concluded that humans are the primary cause of the current warming.
http://www.logicalscience.com/consensus/consensus.htm
