> as lemmas

1921 Gas Jrnl. 23 Nov. 546/1 Some gas administrators in Scotland stuck tenaciously to their 18 and up to even 22 candle gas, with all its incomplete combustion and carbon emission.

1968 Proc. Royal Soc. A. 307 151 The combustion of carbon particles can be quite important for the final carbon emission of combustion chambers, engines, etc.

1977 Amer. Econ. Rev. 67 345/1 Table 1 shows the calculated U.S. energy consumption and world carbon emissions along the uncontrolled and controlled paths.

1990 Sci. Amer. Sept. 123/1 Many politicians believe it is politically impossible to impose a tax high enough to drive down carbon emissions.

2003 S. J. Segal Under Banyan Tree i. 7 With less than 5% of the world's population, the United States is responsible for 23% of the world's carbon emission.