Sentence examples for substitutes for natural from inspiring English sources

The elastomers were at first thought of as synthetic substitutes for natural rubber.

Renewable substitutes for natural gas do not replace imports from unstable places like the Persian Gulf, as the biofuel would.

Recently introduced varnishes based on hydrogenated hydrocarbon styrene and methyl styrene resin hold promise as substitutes for natural resins.

If nothing else, the search for a lasting laboratory-produced heart is a humbling reminder of technology's limitations, of how far even the best minds are from creating substitutes for natural marvels that evolved across millions of years.

Artificial cells have attracted much attention as substitutes for natural cells.

They neither decrease gas consumption nor try to explore less expensive substitutes for natural gas.

There is a widespread belief in government that the best substitute for natural gas is, er, natural gas, ideally extracted by the most damaging means.

Nuclear fuel will primarily be substituting for natural gas -- the least of the carbon dioxide emitters -- as the clean fuel to which electric utilities turn.

The government and the private sector seized on a man-made substitute for natural uranium, producing about 3,400 pounds of an exotic and expensive material called uranium 233.

Yet even when solar and wind power work well, they mostly serve as a substitute for natural gas, which is quite cheap at the moment.

The academy study concurred with a separate analysis issued in May by the General Accounting Office that emphasized the need for more thorough tracking of the results of projects where artificial wetlands are substituted for natural ones.