Climate Letter #1542

Posted on October 29, 2019 by Carl Campbell
A new study highlights the need to gain more information about how nature benefits human sustainability (McGill University).  The loss of biodiversity is continuing, resulting in a loss of ecosystem services vital to humans.  By way of contrast, the information being sought represents a greater need today than it ever was for indigenous societies that have survived for millennia.  Among seven recommendations for further research we find this:  “How can we better monitor long-term trends in key ecological and social processes to prevent the biodiversity loss and halt the land degradation associated with climate change?”  (Even if all the recommended knowledge is acquired, are today’s consumer-oriented and growth-addicted societies sufficiently motivated to pursue the achievement of sustainability if significant sacrifices and other unusual changes are thereby required?  Something to think about.)

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The global environmental editor for The Guardian tells his own story, based on nearly three decades of global travel and study.  “The trends for the climate, the oceans, the forests and the soil are unrelentingly frightening. Humanity has never faced a more wicked problem than the collapse of these natural life support systems.”  He admits to being depressed by it all but sees a dramatic reawakening and changes of behavior in the past year as signs of hope.
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A new study finds that many countries are far from being prepared to meet future climate impacts that are known to be coming (Carbon Brief).  Two of the authors have written this review of the study.  They note that the intense focus on cooperative efforts to mitigate risk have overlooked the need to perform similar efforts toward adaptation.  As a result many countries with weak governance are likely to experience grave damage that could have been avoided.  “One of the reasons for underrepresentation of adaptation in modelling strategies might be that it is extremely complex to quantify.”  The study has proposals that may help to correct this weakness, based in large part on the reality that poor countries with responsible governments are the ones most likely to benefit from outside assistance.
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Research brief:  Nutritious foods have lower environmental impact than unhealthy foods (University of Minnesota).  “For the first time, researchers have tied the health impacts of foods to their overall environmental impact. The report….concludes that foods with positive health outcomes have among the lowest environmental impacts, while other foods, such as red meat, can be especially harmful to both…..The researchers explored how consuming 15 different food groups is, on average, associated with five different health outcomes and five aspects of environmental degradation.”
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Early humans were affected by climate change 130,000 years ago (Garvan Institute of Medical Research).  “A landmark study pinpoints the birthplace of modern humans in southern Africa and suggests how past climate shifts drove their first migration.”  Some very interesting history of our ancestors in this report.
Carl

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