Climate Letter #871

A worsening of water scarcity in the Middle East and North Africa.  Fresh water availability has fallen by two-thirds in the past 40 years, a trend that is expected to continue.  Agriculture is in jeopardy for many reasons, and with the rise of deadly heat events much of this very large region is in danger of becoming uninhabitable within a few decades.

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G-20 finance ministers express an altered view of national commitments to combating climate change.  There is an acknowledgement that wealthy governments are not ready to step in and help the poorer ones adapt by providing large amounts of funds, which were meant to total around $100 billion per year per the Paris agreement.  Many of the ministers are looking for alternatives that are not yet clearly defined.  Trump’s election is believed to be the main reason behind this change of attitude.
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A huge institutional investor shows greater interest in climate risk aversion.  BlackRock, with over $5 trillion in assets under management, is the latest to indicate a willingness to have more influence on climate-related management policies, including support for well-constructed shareholder proposals.  More such institutions could follow, with a potentially profound effect on corporate behavior.
—A full explanation behind BlackRock’s shift is available at this link:
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Scientists now have a better understanding of what has caused the decline in Arctic sea ice.  Global warming dominates, but natural variability always has a role, and that has been more clearly identified in the form of atmospheric waves that wind around the globe.  These have caused the rate of sea ice decline to be higher than predicted for the last few decades but that trend could be reversed—which would be a bit of good news.
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The benefits of a healthy diet include a significant reduction in greenhouse gas emissions.  All of the numbers have been put together in one study relative to the US, and they are impressive.  Red and processed meats are high on the list of what to avoid.
Carl

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