present global warming is CO2 induced...
The geological record contains abundant evidence of the ways in which Earth's climate has changed in the past.
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#1 Jul 21, 2012
Climate change is a defining issue for our time.
What is climate change, and how do geologists know about it?
What are the grounds for concern?
When and how did todays climate become established?
What drives climate change?
What is the Greenhouse Effect?
What effect do natural cycles of climate change have on the planet?
Has sudden climate change occurred before?
Are there more recent examples of rapid climate change?
How did levels of CO2 in the atmosphere change during the ice age?
How has carbon dioxide (CO2) in the atmosphere changed over the longer term?
How has carbon dioxide in the atmosphere changed in recent times?
When was CO2 last at todays level, and what was the world like then?
When global temperature changed, did the same change in temperature happen everywhere?
In conclusion - what does the geological record tell us about the potential effect of continued emissions of CO2?
In the light of the evidence presented here it is reasonable to conclude that emitting further large amounts of CO2 into the atmosphere over time is likely to be unwise, uncomfortable though that fact may be.
P.S. Taken from the original document for the article
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