A life issue, climate change deserves greater attention
Cross-posted from NCRonline.org
Yet we continue to live by an outmoded model of economic development that accelerates grave risks to the essential conditions for life on the planet. Although fossil fuels powered the Industrial Revolution, burning coal, oil and gas contributes to historic atmospheric levels of trapping greenhouse gases that change the Earth’s climate.
In a Sept. 20 open letter, 375 members of the National Academy of Sciences, including 30 Nobel Laureates, write about two interconnected tipping points: environmental and political. The scientists write that our “fingerprints are visible” in the retreat of Arctic sea ice, ocean acidification, sea level rise, and altered rain patterns.
Francis underscores these concerns, noting how these changes create a host of threats to ecosystems and human life. For example, sea level rise poses extreme risks to a quarter of the world’s population that lives on coasts, including the majority of the world’s megacities. Climate change has also contributed to significant changes in agricultural growing seasons and animal migrations that in turn drive human migration and refugee crises, and exacerbate conflicts over resources and land.
Absolute certainty about the human impacts on climate change is unattainable, the scientists write, yet “we are certain beyond a reasonable doubt, however, that the problem of human-caused climate change is real, serious, and immediate, and that this problem poses significant risks to our ability to thrive and build a better future, to national security, to human health and food production, and to the interconnected web of living systems.”
Francis laments how, if present trends are not abated, “unprecedented destruction of whole ecosystems” entails “serious consequences for all of us.”
The scientists of the National Academy of Sciences explain that studies of temperature and sea level change over the last million years demonstrate environmental “tipping points.” They are uncertain how proximate we are to environmental tipping points now. However, they continue, we do know that rapid warming of the planet will likely trigger tipping points for which there is no return. These changes will not last one or two election cycles; rather, they will set in motion large-scale changes in ocean circulation, loss of major ice sheets, and species extinctions that will last thousands of years. As the National Academy of Sciences members suggest, nations that lead the way toward decarbonizing energy systems will also be economic, political and moral leaders in the century ahead.
We need to follow Francis’ call for a new revolution to an ecologically centered ethic that sustains the delicate ecosystems of our one and only common home. This is the fundamental life issue of this election and this century.
Alex Mikulich is a Catholic theologian who serves as assistant director of mission and ministry at Loyola University New Orleans.