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Megan McArdle

Megan McArdle - Megan McArdle is a senior editor for The Atlantic who writes about business and economics. She has worked at three start-ups, a consulting firm, an investment bank, a disaster recovery firm at Ground Zero, and The Economist. She is currently on leave.
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Megan was born and raised on the Upper West Side of Manhattan, and yes, she does enjoy her lattes, as well as the occasional extra-dry skim-milk cappuccino. Her checkered work history includes three start-ups, four years as a technology project manager for a boutique consulting firm, a summer as an associate at an investment bank, and a year spent as sort of an executive copy girl for one of the disaster-recovery firms at Ground Zero � all before the age of 30.

While working at Ground Zero, Megan started Live From the WTC, a blog focused on economics, business, and cooking. She may or may not have been the first major economics blogger, depending on whether we are allowed to throw outlying variables such as Brad Delong out of the set. From there it was but a few steps down the slippery slope to freelance journalism. She has worked in various capacities for The Economist, where she wrote about economics and oversaw the founding of Free Exchange, the magazine's economics blog. She has also maintained her own blog, Asymmetrical Information, which moved to The Atlantic, along with its owner, in August 2007.

Megan holds a bachelor's degree in English literature from the University of Pennsylvania and an M.B.A. from the University of Chicago. After a lifetime as a New Yorker, she now resides in northwest Washington, D.C., where she is still trying to figure out what one does with an apartment larger than 400 square feet.

Tornadoes and Global Warming

By Megan McArdle
May 3 2011, 2:41 PM ET Comment

Were the tragic deaths in Alabama linked to climate change?  CoyoteBlog makes a pretty convincing case that no, they aren't--and that in fact, tornadoes, which are caused by masses of cold air running into warm air, are probably among the last things we'd expect to increase as the globe warms:


. . . here is the update (from here)

By the way, note the 2nd to last bar, which I believe it the 2008 bar (this chart is really hard to read, but it is the only way I have found the data from the NOAA).  In spring of 2008, the media went nuts with a spring spate of tornadoes, saying that the apocalypse was here and this was the ultimate proof of global warming.  In particular, ABC ran a story about how the frequency was twice the previous year.  Beyond the insanity of drawing long term trends in a noisy system from 2 data points, notice that the previous year was virtually the lowest number in half a century, and despite being twice as high, 2008 turned out to be an average to lower-than-average tornado year.  This is what the media does with the climate issue, and why you can trust almost none of it.

We're getting richer, which means that there's more stuff in the way of tornadoes.  But it also means that we can afford to build tougher houses, so that fewer people die in them than would in a poorer world.  

It's easy to give into the temptation to assume that any change in the weather must be due to global warming.  But we've had weather for a long time.  Even if we somehow manage to halt global warming, the tornadoes, we will always have with us.



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