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MIT study: people globally follow a “visitation law”; inverse relationship between distance and frequency of visits

Green Car Congress

A new paper by an MIT team and colleagues in Singapore, China, Italy and Denmark, drawing on global data, finds that people visit places more frequently when they have to travel shorter distances to get there. The visitation law could have many practical applications—from the design of new infrastructure to urban planning.

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Worldwatch Institute study expects number of countries running high-speed rail nearly to double by 2014

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A 2006 study, High Speed Rail and Greenhouse Gas Emissions in the US , released by the Center for Neighborhood Technologies, found that HSR lines in Europe and Japan released 30-70 grams of carbon dioxide per passenger-kilometer, versus 150 grams for automobiles and 170 grams for airplanes. —Worldwatch Senior Researcher Michael Renner.

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