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Machine Design Blogs

Commentary, opinions, and kibitzing by editors of Machine Design Magazine on developments in the news that relate to engineers.

Archive for November, 2007

The negligible impact of CO2 reductions on temperature

John Christy, director of the Earth System Science Center at the University of Alabama and a participant in the U.N.’s Intergovernmental Panel on Climate Change, wrote a piece in the Wall Street Journal (11-1-07) that made some interesting observations about efforts underway to reduce CO2 emissions. I’ll just quote him here:


“California and some Northeastern states have decided to force their residents to buy cars that average 43 miles-per-gallon within the next decade. Even if you applied this law to the entire world, the net effect would reduce projected warming by about 0.05 degrees Fahrenheit by 2100, an amount so minuscule as to be undetectable. Global temperatures vary more than that from day to day.


Suppose you are very serious about making a dent in carbon emissions and could replace about 10% of the world’s energy sources with non-CO2-emitting nuclear power by 2020 — roughly equivalent to halving U.S. emissions. Based on IPCC-like projections, the required 1,000 new nuclear power plants would slow the warming by about 0.2 degrees Fahrenheit per century. ”


He goes on to say that spending on health issues such as micronutrients for children, HIV/AIDS and water purification has benefits 50 to 200 times those of attempting to marginally limit global warming and, that, “Given the scientific uncertainty and our relative impotence regarding climate change, the moral imperative here seems clear to me.”

CAD in Russia

As one of the CAD/CAM/CAE editors on MACHINE DESIGN, I travel a lot to software tradeshows and user conferences. Some of the functions include journalists from all over the world. I met a journalist from Russia at a recent event who kindly sent me a copy of “CAD/CAM/CAE Observer,” published in that country. Interestingly, small portions of the magazine are in English – just enough to be tantalizing and make you wonder what the rest of the ad or article says. It’s interesting to see what jumps out as a product or person immediately recognizable to those interested in CAD.


For example, there is an image of and article by Andrew Anagnost, Senior Director of Product Management at Autodesk titled “Digital prototyping trumps PLM.” There is also an ad that says, “PTC releases Pro/Toolmaker 8.1,” along with the company’s recognizable logo. In an editorial written in somewhat garbled English, the author says he can’t see any threat to PLM systems from Dassault or Siemens PLM. He also theorizes that SAP will create its own CAD platform by acquiring “market players” such as CoCreate or PTC. Interestingly, one of the advertisers is TechniCom Inc. Raymond Kurland President of the firm and Editor of TechniCom’s eWeekly, is a fellow journalist I often see at the events. He even had a review of Solid Edge in the Russian magazine.

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