The National Parks System
is protecting the environment in some farsighted ways. Turns out almost 700 pieces of equipment being used by our National Parks employ
alternative fuels. The Green Energy Parks Program was started at Yellowstone in 1995 and currently is in effect at 23
parks, including Mammoth Cave.
Mammoth Cave uses biofuels in all of its vehicles (everything from tour busses to lawn mowers!) and refuels on-site
from two 3,000 gallon biofuel tanks. No word on where the parks get the fuel.
[Source: National Parks System]
[Source: National Parks System]
