"Writing recently in the Washington Post, environmental guru Bill McKibben asserted that the number and severity of recent weather events, such as the tornado in Joplin, Mo., are too great not to be the result of fossil-fuel induced climate change. He suggested that government's failure to reduce emissions of greenhouse gases will result in more violent weather and weather-related deaths in the future. And pointing to the tragedy in Joplin, Mr. McKibben summarily dismissed the idea that, if climate change really is occurring, human beings can successfully adapt to it.
There's one problem with this global-warming chicken little-ism. It has little to do with reality. National Weather Service data on weather-related fatalities since 1940 show that the risks of Americans being killed by violent weather have fallen significantly over the past 70 years.
The annual number of deaths caused by tornadoes, floods and hurricanes, of course, varies. For example, the number of persons killed by these weather events in 1972 was 703 while the number killed in 1988 was 72. But amid this variance is a clear trend: The number of weather-related fatalities, especially since 1980, has dropped dramatically (see chart above, data here
For the 30-year span of 1980-2009, the average annual number of Americans killed by tornadoes, floods and hurricanes was 194—fully one-third fewer deaths each year than during the 1940-1979 period. The average annual number of deaths for the years 1980-2009 falls even further, to 160 from 194, if we exclude the deaths attributed to Hurricane Katrina, most of which were caused by a levee that breached on the day after the storm struck land.
This decline in the absolute number of deaths caused by tornadoes, floods and hurricanes is even more impressive considering that the population of the United States more than doubled over these years—to 308 million in 2010 from 132 million in 1940 (see bottom chart above).
Here's the Boudreaux Bet: So confident am I that the number of deaths from violent storms will continue to decline that I challenge Mr. McKibben—or Al Gore, Paul Krugman, or any other climate-change doomsayer—to put his wealth where his words are. I'll bet $10,000 that the average annual number of Americans killed by tornadoes, floods and hurricanes will fall over the next 20 years. Specifically, I'll bet that the average annual number of Americans killed by these violent weather events from 2011 through 2030 will be lower than it was from 1991 through 2010.
If environmentalists really are convinced that climate change inevitably makes life on Earth more lethal, this bet for them is a no-brainer. They can position themselves to earn a cool 10 grand while demonstrating to a still-skeptical American public the seriousness of their convictions. But if no one accepts my bet, what would that fact say about how seriously Americans should treat climate-change doomsaying? Do I have any takers?"
MP: Excluding the year 2005 for Katrina, the trend lines in the two graphs above are statistically significant at the 1% level. Adjusted for the U.S. population, the average American was more than 2.5 times more likely to get killed in a flood, hurricane or tornado between 1940 and 1979 than in the period between 1980-2009. The bottom chart shows that 2009 was the safest year ever since 1940, with fewer than 0.25 deaths per 1 million population.