The corridor has many sections built but is not complete yet, and opponents have fought its progress, claiming it is environmentally invasive and calling it the "road to nowhere," because it does not directly connect to Virginia.
Biological H2 production has an edge over its chemical counterpart mainly because it is environmentally benign.
Given this last result, the advisability of substituting the neighborhood network by a discontinuous system based on propane tanks has been evaluated, obtaining as a result that when a single neighborhood pipe, longer than 1 km, is required to reach one user, it is environmentally preferable for all the studied environmental categories to use the propane tank system.
It has the highest energy content per unit weight of any known fuel and in comparison to the other known natural gases it is environmentally safe - in fact, its combustion results only in water vapour and energy.
Among the family of conducting polymers, polyaniline is one of the most useful since it is environmentally stable in both its doped, conducting form and in its de-doped, insulating form.
Burns gives Lisa its opening tour, showing her that it is environmentally sound and made of recycled materials.
Volkswagen likes to claim it is environmentally conscious and has billed its cars as "clean diesel".
"And it is environmentally friendly.
This is as unfair as it is environmentally unsound.
Besides being clean, delicious and inexpensive, it is environmentally friendly and has no calories.
It is environmentally friendly, cheaper and significantly safer than currently available materials.
