http://blogs.ei.columbia.edu/2010/04/11/dog-sled-races-link-back-to-a-centuries-old-tradition/ Tapping experts in climate, geology, oceanography, ecology, sustainable development, global health, energy, food and water, State of the Planet captures stories of how the Earth works and how we can sustainably make our lives better. Fri, 14 Jun 2013 16:28:17 +0000 hourly 1 http://wordpress.org/?v=3.5.1 http://blogs.ei.columbia.edu/2010/04/11/dog-sled-races-link-back-to-a-centuries-old-tradition/comment-page-1/#comment-19135 Leo Tue, 09 Aug 2011 19:32:10 +0000 http://blogs.ei.columbia.edu/?p=2467#comment-19135 Sled dogs are an amazing animal. They are able to pull heavy loads for long distances at 20 mph in extreme conditions.
They seem to love what they do and are willing to do it day after day.

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