In his July 11 letter, Ken Jorgensen asserted that the rise in earth’s temperature is “not something we could perceive except with instruments.” Try telling that to the people in the area of Australia where the temperature reached 120 degrees Fahrenheit in January, or to citizens of Anchorage, Alaska where it was 90 F last week. Far more high than low temperature records are being broken. The rise of an average of 1 degree Celsius (almost 2 degrees Fahrenheit) in earth’s overall temperature since the 19th century is not uniform; the temperature rise in the Arctic is at least double the rest of the earth. The result is easily-seen glaciers receding and extreme weather in various places.
Climate scientists cannot find any natural causes, such as substantial increased volcanic activity in the last 100 years, that would account for this spike in greenhouse gases. They conclude, logically, that it must be from human activity, one of which is deforestation. So thanks, Mr. Jorgensen, for pointing out the role of vegetation in consuming CO2. (Although that does not mean that animal habitats must always yield to agriculture.)
It’s true that reducing our carbon footprint will be expensive. The alternative – maintaining “business as usual” – will result in a harsher life for our descendants, a significant drop in their quality of living.