The weight of evidence suggests global warming may, on net, end up saving lives through reducing the number and severity of cold spells, according to scientists. “Based upon real-world data, it is obvious that global warming is going to directly prevent a large number of deaths,” Cato Institute scientists Patrick Michaels and Craig Idso wrote in a blog post Thursday analyzing weather mortality data. “The truth be told, as shown by real-world numbers, humanity has much more to gain in terms of physical health from rising, as opposed to falling, temperatures,” they wrote.
The study found that if global warming isn't slowed by the end of the century, scorching temperatures could cost Americans several hundred million nights of lost sleep each year...University of Miami scientist Laurence Kalkstein, an expert on the impacts of heat waves on human health who was not involved in the study, complimented the research. "Increased nighttime temperatures can lead to other health problems, including increased emergency room visits and even increased heat-related deaths … the authors acknowledge that other negative health-related factors can be affected by higher overnight temperatures,” he said.