TRENDING Q&A- CSX SPONSORED QUESTION:

Today's environmental question of the day from CSX.

Published Apr 18, 2011 8:17 PM

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PopSci.com readers: Which of the following is the most fuel-efficient method of transportation and why: Trains, planes or automobiles? Answer below for a chance to be entered to win an Apple TV, thanks to CSX.

CSX Q&A

Environment

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TRENDING Q&A- CSX SPONSORED QUESTION:

MORE TO READ

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What actually happens to the clothes you donate depends on where you live

Frozen Siberian microbes just woke up from a 24,000-year nap—and immediately got busy