Excellent recent articles on weather events, some of which are about extreme, rare or record-setting events. A more difficult topic on which to report is climate, especially climate change. To quote Henry David Thoreau , "Simply simplify."

In this spirit, simply publish the atmospheric concentrations of greenhouse gases. No matter whether the levels are caused by man's use of fossil fuels or by natural sources, the levels are higher than any in previous eons. The ability of the soil, plants and oceans to absorb this unprecedented level of greenhouse gas is nearing their peak capacity

This can only move extreme weather events into a new and dangerous climate. Dangerous due to sea level rise, dangerous because of desertification of cropland, dangerous with disease vectors moving into new areas, dangerous secondary to climate refugees, dangerous because known and unknown tipping points can lead to runaway warming.

Simply put, greenhouse gases cause warming of the earth. The advocacy group 350.org chose that level of CO2 as the maximum safe level. We are now at 415 and rising. Simply put, we will reduce our greenhouse gases best and most simply by the carbon fee and dividend proposal. Urge Representative O'Halleran to sponsor this legislation in Congress. Once enacted, everyone will save money by reducing their carbon footprint. The dividend comes back to each person, as opposed to a tax which the government keeps. It is a market based plan which levels the playing field for all countries. Google ccl.org.

DAVID SPENCE, MD

Flagstaff

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