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Showing posts from November, 2010

Increased Arctic Shipping Could Accelerate Climate Change

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Ship traffic diverting from current routes to new routes through the Arctic is projected to reach 2 percent of global traffic by 2030 and to 5 percent in 2050. In comparison, shipping volumes through the Suez and Panama canals currently account for about 4 percent and 8 percent of global trade volume, respectively. by Tracey Bryant Newark DE (SPX) Nov 03, 2010 As the ice-capped Arctic Ocean warms, ship traffic will increase at the top of the world. And if the sea ice continues to decline, a new route connecting international trading partners may emerge - but not without significant repercussions to climate, according to a U.S. and Canadian research team that includes a University of Delaware scientist. Growing Arctic ship traffic will bring with it air pollution that has the potential to accelerate climate change in the world's northern reaches. And it's more than a greenhouse gas problem - engine exhaust particles could increase warming by some 17-78 percent, the researchers s...

Letter to the Panama News 29-10-2010

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Bells and whistles won't fix serious shortcomings Bert G. Shelton As construction of the new locks for the Panama Canal proceeds, publicity continues to praise the project's choice of "superior" gates --- and steers clear of noting the pitfalls inherent to the system's overall layout. No matter how superior a modern-day component is --- as compared to one available 100 years ago --- better parts cannot make a poorer lock layout outperform a better lock layout since all layouts can similarly benefit from those same components. The problem with the expansion plan's lock layout is that it is based on a 1930's plan that was long ago found to be deficient. Furthermore, modifications to that plan for this project only make things worse. In the 1930's, the US began construction of a "third set", or lane, of locks. The 1930's lane addition was to have three steps at each end of the canal, like the canal's original two lanes have, but this add...