Remember, most of what we estimate about what will happen is based on predictive modeling built on trend data and assumptions. USA Today runs the following today:
Could the best climate models -- the ones used to predict global warming -- all be wrong?
Maybe so, says a new study published online today in the
journal Nature Geoscience. The report found that only about half of the
warming that occurred during a natural climate change 55 million years ago can
be explained by excess carbon dioxide in the atmosphere. What caused the
remainder of the warming is a mystery.