Climate Letter #821

New research on the skewing of bird migration.  This study, like those that focus on melting glaciers, adds considerable weight to arguments that global warming is a reality, and that it profoundly affects the natural world.

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How warmer winters affect reindeer and the people who built a culture maintaining herds.
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Data exhibiting the impact of plastic waste.  This has been a rapidly growing problem since about 1950, on a trajectory that has much in common with climate change.  They both involve wasteful remnants of the modern way of life, which humans the world over are avidly adopting with little concern for the lasting nature of adverse environmental effects that are especially harmful to wildlife.
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A new study about the outlook for Atlantic deep water circulation.  The author and his team are not as pessimistic as the earlier Hansen study was about the likelihood of a complete collapse, but fully agree that a complete collapse is possible and would be catastrophic.
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A review of Michael Mann’s new book about the dangers of climate change.  The review is in the form of an interview with Dr. Mann, one of the more outspoken climate scientists.  The book includes a collection of clever cartoons by Tom Toles mostly aimed at denialists, examples shown.
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A top quality video lecture on the acceleration of the Anthropocene.  This was the keynote address at a recent conference given by Will Steffen, an Australian professor of Earth systems.  Just excellent.

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