@vgr 6% in America. About 10% use more than once per week. Would guess less affluent countries have higher %s in both http://fivethirtyeight.com/datalab/how-many-americans-dont-know-how-to-ride-a-bike/ …
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@vgr you might like this related NYTimes article: http://www.nytimes.com/2015/07/14/science/the-bicycle-and-the-ride-to-modern-america.html?smid=tw-nytimesscience …Thanks. Twitter will use this to make your timeline better. UndoUndo
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@vgr although this is Americans only. world numbers are going to be harder especially how to determine accessibility and other factors.
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