How risks due to climate change grow as temperatures rise. A new study shows how much of the world”s population will suffer intolerable consequences at 1.5C and where they are located, then the same for 2.0C and again at 3.0C. At 1.5C that would be 16% of the probable population, rising to 50% at 3.0C. Asia and Africa would be hit the hardest in a direct way, but the full scope of turmoil is hard to imagine and would have some type of devastating effects everywhere. The study employed 26 authors and made reference to 88 previously published studies. It can be taken seriously as a description of where we are headed with respect to the specified categories of risk, which indeed do not constitute a complete list of all the known risks.
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–Here is a link to the full study, which has open access:
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Widespread ocean anoxia was a major factor in causing mass extinctions of the past. A scientist who has studied these events believes his results have implications for the extinction process that is developing today. “We are warming and acidifying the oceans today and warmer oceans hold less and less oxygen. Some marine organisms can handle the heat and the acidity, but not the lack of oxygen” Elrick said. “All these things are happening today and the results from the Late Ordovician study indicate the potential severity of marine anoxia as an extinction driver for many of the past and ongoing biologic extinction events.”
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The Paris Agreement requires closure of a coal plant every day until 2040. Most would still have years of useful remaining life, thus causing much anguish for owners, workers and so on.
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How the planet’s biomass has changed with the rise of human civilization. This fascinating report from The Guardian is based on a fully reviewed scientific study. Because the treatment is comprehensive in its inclusiveness, many of the numbers are completely different from what you would expect. Wild mammals have been the biggest losers during this period.
–The full study has open access: http://www.pnas.org/content/early/2018/05/15/1711842115#sec-6
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Dry river beds can make a meaningful contribution to climate change. Researchers are surprised by how much CO2 is released by the decomposition of old plant and animal matter when the water returns. The scale is said to be large enough to merit consideration in climate models.
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What a world without fossil fuels would be like. This short video from BBC provides inspiring coverage of a broad range of the grievances caused by the burning of fossil fuels that would no longer be part of our lives.
Carl