Of course, she's wrong, but when Rep Alexandria Ocasio-Cortez said unabated climate change will end the world in 12 years, she was only saying what most people are thinking.https://thehill.com/policy/energy-environment/426353-ocasio-cortez-the-world-will-end-in-12-years-if-we-dont-address …
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The truth is, that global warming will have a negative impact but fairly small Best estimate (update from UN climate panel by Nobel Laureate Nordhaus): The effect of unmitigated climate change in 2100 is equivalent to a reduction in incomes of 2-4% https://www.nber.org/reporter/2017number3/nordhaus.html …pic.twitter.com/MnABmS0a6T
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Ocasio-Cortez: The world will end in 12 years, and your concern is cost? She should have said: Climate will cost 0.2% more of GDP by 2030, and your concern is cost? Hell yes Spending lots to do little is bad And many other issues need attentionpic.twitter.com/ifp7bnsc60
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Most people don't understand how the costs of climate can be so small But that is because media overplays most costs E.g. cost of extreme weather makes up an ever *smaller* part of global GDP https://www.tandfonline.com/doi/full/10.1080/17477891.2018.1540343 …pic.twitter.com/JpBIzsh2k4
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And perhaps surprisingly, ever fewer people die from climate-related disasters In 1920s, half a million people died each year, this decade about 20,000 Global population has increased four-fold, meaning individual climate risk declined almost 99% https://www.facebook.com/bjornlomborg/photos/a.221758208967.168468.146605843967/10156615395793968/?type=3&theater …pic.twitter.com/sB5UWgcU0f
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This does not mean we should ignore climate It *is* a problem, and we *can* fix part of it. We should just do so smartly (though green R&D), and carefully, so we don't end up spending more resources to fix climate badly, than the benefits we'll reap https://www.project-syndicate.org/commentary/climate-change-self-defeating-alarmism-by-bjorn-lomborg-2018-12 …
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