| It delivers some of its meals in a nonpolluting electric truck. |
| Companies that produce lots of carbon dioxide emissions sometimes purchase offsets to subsidize nonpolluting energy alternatives. |
| In many parts of the continent, you can tap the power of the wind to generate nonpolluting renewable electricity for your home. |
| It is essential that the U. S. develop new sustainable sources of nonpolluting energy. |
| They have built a buoy that may prove to be an efficient, nonpolluting generator of electricity. |
| Not having to worry about the expenses of nonpolluting factories makes it cheaper to run them. |
