The average temperature of the Earth is rising at a rate that far exceeds that which would be expected based on natural causes alone. This is known and accepted by the vast majority of climate scientists and most of the thoughtful leadership in this country and around the world.
The key phrase here is “average temperature.” Looking out your window and seeing snow does not mean that global warming does not exist. It simply means that it is winter. What matters is that annual average temperatures are showing an alarming upward trend.
There are uncertainties about how much warming is related to human activity, but logical cause and effect relationships tell us that some percentage of it probably is. Could it be 100 percent? With so much at stake, do we want to quibble over that answer for very long?
We who viewed the “Church of Global Warming” cartoon that recently ran in this paper (Dec. 28) must remember that opinion is not the same as science. The science, though inconvenient, is pretty clear in this area.
Dr. Reid Pettit, Pontiac