HURRICANES, SCIENTIFICALLY KNOWN as tropical cyclones, are the costliest weather catastrophes. The costs of US landfalling hurricanes since 1980 alone amount to two-thirds of entire global catastrophic weather losses over that period. Hurricanes Katrina (2005), Sandy (2012), Harvey (2017), Irma (2017), Florence (2018), and Dorian (2019) have all been used to argue that global warming is making extreme weather worse. But this is not what the peer-reviewed science says.29 The UN’s climate scientists looked at the evidence and concluded that globally, hurricanes are not getting more frequent:
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