Earth Day

Dear Editor:

As we know, global warming is caused by solar luminosity, earth’s orbit around the sun, volcanic eruptions, cloud forcing, deforestation, greenhouse gases, global dimming, etc. Naturally occurring greenhouse gases are comprised of 36-70 percent water vapor, 9-26 percent carbon dioxide (CO2) emissions, 4-9 percent methane and a few others.

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This story was posted on April 13, 2017.