More than just the tailpipe -- true environmental cost of travel

Trains, planes, buses and automobiles do not only effect the environment via their exhaust pipes. There is a full life-cycle of processes associated with getting from a to b that we rarely acknowledge.

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<p><a href="http://www.physorg.com/news163644823.html">More than just the tailpipe -- true environmental cost of travel</a></p> <p>Trains, planes, buses and automobiles do not only effect the environment via their exhaust pipes. There is a full life-cycle of processes associated with getting from a to b that we rarely acknowledge.</p>