in a decent pair of hiking boots, to mounting an interstellar rocket to head
around the earth, man has come up with an astounding variety of ways to
travel. Have you ever stopped to think
which method might be the most “efficient” when it comes to the responsible
consumption of fossil fuels this planet has left to offer? What do you think is a more efficient way to
go, coal powered locomotive train, or natural gas powered bus? The answer may surprise you!
gallon of fuel will carry the these vehicles over the following distances:
If you want Generally I can So, what do you do? You make intelligent choices for your EXTRA: If you have
to choose a vehicle based on its carbon footprint alone, you need to make sure
you’re being fair in the comparison and that you’re comparing “apples to
apples,” per se. One way to do this is
to divide the total amount of fuel consumed by the total number of passengers
being moved. According to the EPA, one
gallon of gasoline emits 19.4lbs of CO2 when you burn it. Therefore, a car that gets 25mpg emits .776
pounds per mile. If one person wants to
drive himself 50 miles in that car, he’ll distribute 38.8lbs of CO2 into the
air (19.4 x2 gallons to go 50 miles, per person). If he takes three passengers, the amount
drops to 9.7lbs per person, cutting the actual “carbon footprint” into a fourth of what it would be if he traveled alone.
speaking, full vehicles are much more efficient than empty ones. This is why fully loaded passenger buses are
often more efficient than trains. Trains
certainly have the edge at rush hour though, especially light-rail trains like
subways, etc. Airplanes are remarkably
efficient, but remember; they only have one moving part per engine.
already hear some of you out there complaining, “Wait, some fuels are dirtier
than others!” True. Gasoline is only one example. Generating 100,000 British Thermal Units
(BTUs) from coal will produce about 42 lbs of CO2. Natural gas on the other hand, can produce
that same amount of energy with only 14lbs of CO2. Therefore, it may be true that a coal powered
train is more efficient than a natural gas powered bus, but it would produce
significantly more pollution to travel the same distance.
specific travel needs, that’s what you do!
Also, remember the bigger picture.
Watch this video below and remember, each yellow dot that you see
represents one airplane carrying an average of 178 passengers… Amazing isn’t
questions for Ken regarding business travel, hotels, airplanes, etc, please send an email! Your questions
will be recorded and Ken will answer the best ones in his Ask the
Expert podcast show.
If you want
So, what do you do? You make intelligent choices for your
EXTRA: If you have