Human Life Expectancy
Arguably, the most significant of all benefits humanity receives from increasing CO2 emissions and fossil fuel use pertains to human life expectancy.

Figure 1 below plots the two hundred year trend of human life expectancy and fossil fuel consumption, revealing a high degree of correlation among the two records. Two hundred years ago, the average life expectancy of a child born was a mere 29 years. Health care was relatively non-existent and 43% of the world's newborns died before reaching their 5th birthday. Thereafter, things began to change, though slowly at first. Society began to use fossil fuels on a much larger scale and industrialize. Rising energy production brought economic prosperity and literacy, which helped reduce poverty. Housing and sanitation improved. People ate more and they ate healthier, nutritious foods. A more educated population coupled with fast-developing societies provided fertile ground for key scientific breakthroughs in modern medicine that both saved and prolonged lives.

During the 19th century life expectancy changed but little. Then, as fossil energy consumption really took off, so did human longevity, with global life expectancy doubling in value over the next ten decades, reaching 72 years today. The real significance of this monumental accomplishment in human achievement, however, is not in the doubling of life expectancy in and of itself, but in the number of persons who are experiencing it.

Figure 1. Two-century trend in global life expectancy and fossil fuel consumption.

Consider, for example, that in 1820 the world population was only 1.06 billion, whereas today (2019) it is 7.38 billion. By multiplying the population in each of these years by the corresponding average lifespan at that time, it is determined that the number of total human life years supported by the planet in 1820 amounted to 30.7 billion, whereas today it is a much larger 527 billion. Thus, thanks in large measure to benefits from enhanced fossil energy use, our planet now supports an increase in total human life years that is 17-fold larger than it was just two centuries ago! Such improvements are astounding and will likely only be enhanced in the years and decades to come as energy remains accessible, affordable and plentiful.

Figure 2. Calculation of the total planetary human life years in 1820 and 2019.


For supporting information on this topic, click on the several links below.

The Morality of Climate Change
Watch this short video presentation by Dr. John Christy .

Human Life Span -- Summary:
The past two centuries have witnessed a significant degree of global warming, as the earth has recovered from the global chill of the Little Ice Age and entered the Modern Warm Period. Simultaneously, the planet has seen an increase in its atmospheric CO2 concentration that has taken it to levels not experienced for eons. What effects have these "twin evils" of the climate-alarmist crowd had on human health? Although no one can give a precise quantitative answer to this question, it is possible to assess their relative importance by considering the history of human longevity.

Health Effects of CO2:
Scroll down this page and click on the numerous links under the heading of Health Effects to read numerous reviews of peer-reviewed science articles highlighting links between higher levels of atmospheric CO2 and human health.

Human Life Span:
Scroll down this page to read various reviews of peer-reviewed science articles discussing the relationship between CO2 and human longevity.